Late to the party here. But just finished my foamie and want to offer my advice. Any polyurethane adhesive (gorilla glue and most construction adhesives) create a mechanical bond to the two pieces being glued. You absolutely must create a rough, or uneven, surface to the pieces being adhered. When done correctly the connection will be many times stronger than the material being adhered. Try sanding the XPS foam at the connection point with a very coarse sand paper. If possible, I recommend rough sanding first and following up with a docker after (I used a roller docker with steel pins made for docking pizza dough). For adhesive I really like a couple construction adhesive designed for outdoor applications: Loctite PL Max (caulking tubes only) and Loctite Power Grab All Purpose (available by the gallon). They are fast acting, easy to work with, and clean up with soap and water.

@thelwood

Жыл бұрын

Thank you for your response! And yes, in the trailer we roughed the foam up with a wall paper remover in some parts and 80 grit sandpaper in others. The end to end demonstration more accurately shows the foam without any film over it. The foam fusion still provided the deepest bond.

@carrolbrooks2143

Жыл бұрын

@@thelwood Another helpful hint: Use The Vacuum Bag System, Used In Fiberglass/Carbon Fiber Lamination, You Can Also Use A Screen Printing Technique for Burning Screens. Build an oversized Frame and attach Neoprene Wetsuit Material. To Pull The vacuum Straight Down From the Upper Surface To Evenly Distribute the Pressure on the Upper Surface. I Believe they use this "Dry Mount" Technique to mount poster prints to Foamcore for picture frames!?!! 😉🙃😜

@davidelliott5843

11 ай бұрын

Car body panel PU mastic is amazingly sticky and the resulting rubber is tough. I’ve successfully repaired kids school shoes. You won’t find a better test than that.

@jamesmorton7881

10 ай бұрын

Latex paint, will bond EPS sheets, and is friendly with hot-wire cutting.

@MrIgottap

10 ай бұрын

⁠@@jamesmorton7881was going to recommend latex paint as well. Roughing up the surfaces to be bonded before application will provide even better adhesion.

Wood glue didn't cure because the foam is water tight. Wood normally draws moisture out of the glue, which allows the glue to dry. Something to consider with any kind of water based product if you're working with synthetic materials that do not "breath".

@patrickbodine1300

6 ай бұрын

Breathe. It is what you do. Breath is what it is.

Just a thought - the aircraft and boat guys use a 2 part epoxy (West System) which you can get at a marine supply store or aircraft supply house (Aircraft Spruce) then they sand and put a layer of fiberglass over the joint - the result you can stand on or jump on without breaking. Sanding both surfaces of a joint is critical. I made wing ribs this way and flew it for years - about unbreakable if you need great strength. Good video and fun project - thanks for making :)

@thelwood

11 ай бұрын

Sounds great! Great information, thanks!

@sda141

4 ай бұрын

Yes! I use epoxy in my art projects and I was thinking the same thing

@mr.e7022

2 ай бұрын

Doesn't the epoxy melt the XPS foam?

@montiemorrison5637

29 күн бұрын

@@mr.e7022 No, epoxy is good for EPS and XPS, old school polyester resin will melt both.

It's usually not the spray paint that melts the foam, it's often the paint thinners used to make the paint thin enough to spray. If you spray the foam from far enough away, most of the thinner will evaporate as the droplets go through the air before it hits the surface. You'll have to test the safe distance for each brand and color on sample pieces. People who make costumes use XPS a lot, they have some tips and tricks that you don't hear about within the community of large project builders.

@thelwood

Жыл бұрын

Thank you! Great information!

@LaOwlett

11 ай бұрын

@@BLAlley The paint itself is almost never going to react with the foam, It's the propellants that rapidly evaporate. You want to spray from far enough that the propellant mostly evaporates before it lands on the project but not so far away that the paint starts to dry in the air.

@LaOwlett

11 ай бұрын

@@BLAlley I've used it. There's a happy medium where it subtly melts and bonds to the surface. This is different for every brand and even every color of spray paint so you need to test a scrap piece. Feel free to invest in a spray gun or use a paint brush. Most people are interested in using spray paints because of their price and availability, ease of use... That's why I explained the why and how to avoid damaging an XPS project.

@LaOwlett

11 ай бұрын

@@BLAlley It's a bad idea in your own opinion. No one is preventing you from doing it your way. Not everyone has the money to be picky. Move along.

@LuckyTown77

9 ай бұрын

​@@LaOwlett your channel has no content. It is moving nowhere.

A 1/2" fillet of thickened epoxy and bamboo skewers dowels will make MUCH stronger joints than just butted glue joints. The foam kayak guys use the skewers Fillets are common in boat building (foam and wood)

@thelwood

Жыл бұрын

Thanks! We did add a few skewers here and there. But with the relief cuts for the curves and only using 1 in foam, they were prone to blowing through the foam or ending up between the relief cuts. So we ended up just using the adhesive and then once it was wrapped with the canvas it was super strong. I will look into the fillet method.

@brettmoritz3698

9 ай бұрын

​@@thelwoodJackman Works uses the fillet process on the Upside down boat!

@RandomAxeOfKindness

4 ай бұрын

Doweling is easy with foam, and it makes a big difference. Even a bunch of toothpicks can really strengthen long joints.

Experts like burt rutan have been making airplanes with foam and fiberglass construction with extreme strength, they use a form of epoxy I believe then lay fiberglass over for a high strength exterior

I really like he concept and the overall look of your Teardrop Camper i spent 35 years as a ProfessionalWoodworker and i’ve always done similiar resting on products i’ve worked on myself i one time years ago had a Finishing issue with using incomparable Clear coats or TopCoats that actually bubbled the other finishes thankfully i discovered that in a test and not on my Final Furniture Peice ! in working with Foams i’ve discovered you need to stay away from products that use products that end in Line as the drying chemical i like using Adhesive Caulks designed for the Marine Industry and often i prefer 3 M 5200 it’s expensive as hell but has a tenacious bond with almost anything it is the usual choice Trailer companies bond the “Screwless smooth exterior Panels onto the frames with one draw back to 5200 is it’s usually Permanent a positive is it sets up under water and is available in a few colors i’ve seen it trolled onto the exterior of a WoodenBoat Hull embedded with a Fiberglass Mat and then GelCoated on top of that to make a no Soak leak free hull it looks great and really tough ed up a very old boat again it was expensive as it was purchased in 5 gallon Pails that are a few hundred dollars per pail

@thelwood

Жыл бұрын

Thank you! And thank you for the excellent information! That adhesive sounds amazing:)

Re: Surface prep - I use a hand held wire brush - it's fast, it's effective. But - thanks for the tests!! Great to know the Foam Fusion is good. I've been on the Foamie Trailer page forever (decades? lol) - and yet you have taught me new things :) .

@thelwood

Жыл бұрын

Wire brush is a great idea!

@Tonisuperfly

2 ай бұрын

Excellent idea

If you need to make walls or counter tops or other large panels invest in a vacuum pump and vacuum bags to clamp the wood skins to the foam core to create super strong, super lightweight foam core composite panels. You can get 1/16" real wood veneers or use very thin plywood to lay up on each side of the foam, place this lay up in the plastic vacuum bag and seal the edges, install the connection port for the vacuum pump to the plastic bag, then turn the vacuum pump on and get as close to -29.92 inHg or -14.696 psi as possible. Since all the air has been removed from the bag the atmosphere is pushing from all directions clamping your lay up together with a uniform force of 14.696 pounds per square inch. If your layup panel was 96x48 and you wanted to just use concrete cinder blocks to apply a clamping force to your layup while it cured you would need a whopping 67,719 lbs of cinder blocks to equal the clamping pressure of using a vacuum bag with a full vacuum applied. One other hint, if you need to make a composite panel that will hold more weight increase the thickness of the core and keep the skin thicknesses the same, for example a 2"-3" thick foam core is going to be massively strong that if you were doing a van build you could clear span from side to side for use as a bed platform with the only support being a cleat running down each side wall and no center support. I hope this helps

@thelwood

11 ай бұрын

Great ideas! I have a vacupress but I haven't tried using it with foam, just veneer and mdf

@Tonisuperfly

2 ай бұрын

Excellent tips, thanks!

There is a term called glue starved. This term relates to two smooth surfaces being glued together with a Non-etching glue( glue does not melt or etch the surfaces to be glued ) and have been clamped together to tight and all of the glues is squeezed out of the area that was to be glued together. IF the two surfaces to be glued together are sanded to make a more pores or rougher surface allowing the glue to have more surface area to stick to the glue joint becomes MUCH stronger. Even by running a pen or dull nail scratching parallel lines inside the surface to be glued will increase the glue joint dramatically because the two pieces that are to be glued together to have MORE glue staying into the joint surface area.

@thelwood

11 ай бұрын

Thanks for the info! On the teardrop we sanded at 150 and ran a wallpaper remover it. The side by side joint in this test represents this best since both surfaces were cut. I was impressed with how deep the bond was through the shiny surface using the foam fusion. Have a great day!

Thank you so much! I appreciate these types of videos because it saves so much time for us DIY types in testing ourselves. Much appreciated!!

@thelwood

Жыл бұрын

Thank you!

Fantastic video Lucy. Super valuable for anyone building a foamie!!

@thelwood

2 жыл бұрын

Thanks, Tom!

Thank you for making this video! I appreciate your commentary and effort completing your testing.

@thelwood

Жыл бұрын

You're welcome and thank you!

I have done a lot of projects with foam and fiberglass using 2 part epoxy which glues closed cell foam together great and seals fiberglass cloth to foam very well with no delaminations when done properly. Epoxy can be expensive but doesn't take a lot for a project like the "foamie" trailer. I suspect the stuff you liked, the foam fusion would work well also. The epoxy makes thefiberglass very stiff and hard but needs to be painted well with a UV barrier paint to keep from degrading over the years outside. But it makes an outstandingly rigid and protected outer shell for the trailer. Great presentation!

My foam project involved fabrication of a male plug which was to be layered with composite glass using epoxy. I stacked the pink "Panther " Home Depot 2 inch blocks with original gorilla glue. Although I weighted it with 300 pounds the foam expansion actually lifted the weight. The expansion caused the finished block to be of uneven proportions which I had to sand true before shaping the plug. So it is nice to learn there are alternatives which are strong and non expanding. Excellent! Thank you.

Great demo. Thanks Lucy!

If you hold the spray paint back farther it allows the ingredient that eats the foam to evaporate off before the paint hits the foam.

@thelwood

Жыл бұрын

Good to know!

The foamie scooter trailer is so dang cool! I feel very inspired seeing it.

@thelwood

Жыл бұрын

Thank you!

Thanks a bunch Lucy! I will try using this in my build.

@thelwood

2 жыл бұрын

You're welcome! Enjoy your build!

Build a clamp with foam and dowels using EVA for the faces to prevent slipping and marring.

I liked this test video. Very good work. Considering you are going to be covering the foam in a composite fabric that provides the strength, you really only need something that will hold the pieces together and is easy/similar to the foam to sand.

Very informative. Have fabricated foam air ducts successfully but always needed to handle with care. Thanks

Great video. I’m getting ready to make a foamy camper and I need to glue 3mm ply on foam before fiberglassing. Gorilla clear as it’s available here locally in Japan. Thanks

I found big metal screws (#12) also do a pretty good job of clamping foam together when gluing. They bite enough to pull things tight. They also work well with pocket jig holes where that's an option for butt joints.

@thelwood

2 жыл бұрын

Thanks for the tip! I am happy to hear they have enough bite! I will definitely add some if I do another foamie!

Drywall screws make good clamps use the coarse thread versions, provides some extra strength as it grabs some glue going in. some foam has plastic coat that will peal off. Kabob sticks also work good put on some glue.

@thelwood

Жыл бұрын

Those are great tips! We did use a few kabob skewers but with only using 1 in foam and having kerf/relief cuts we put one through the kerf so it was visible. After that we decided it was best to just use the tape. By the time we wrapped it all in canvas it was plenty strong. Thanks for you tips!

Nice experiment design and excellent review! I enjoy your channel very much! Thanks for sharing all that you do!

@thelwood

Жыл бұрын

Thank you so much!

Thank you for making this video. Very practical and helpful.

@thelwood

Жыл бұрын

You're welcome, thanks for watching!

Thank you for your efforts with all your testing.

Thanks! Practical, not too technical (like Project Farm) and friendly. First time viewer, now subbed.

@thelwood

Жыл бұрын

Thank you!

Very useful demo, Thanks!

@thelwood

2 жыл бұрын

Thanks!

That foam fusion seems amazing!

@thelwood

2 жыл бұрын

It would have been a nightmare if we had used the original plan of gorilla glue!

Forgot to add. PL makes a foam specific polyurethane adhesive. It comes in a caulk type tube. It worked well when I insulated my garage door with rigid foam

@thelwood

Жыл бұрын

Good to know! Thanks!

Just the info I needed! Thanks for the detailed review!

Great video. Just the info I was looking for! Mahalo for sharing! : )

THANK YOU FOR TAKING THE TIME TO READ THIS.

VERY helpful test you did, thank you!!!

@thelwood

Жыл бұрын

Thanks!

Outside grass carpet glue is great

loctite marine adheisive sealant, sold in caulk size tubes, cost about $15.00 per tube. really good stuff, works with many foams.

Enjoyed your test review! Thanks.

Didn't you know that one of your biggest fans is an amazing material scientist and glue expert?! If you need a "Home Depot" solution, I would expect a product like Loctite PL300 to work well. Any of the urethane based adhesives will foam--that's why I avoid them for wood projects too!

@thelwood

2 жыл бұрын

Awesome! Thanks Seth!

@thelwood

2 жыл бұрын

I will consult you for all of my glue needs/ questions!

@SquareRootOfMinus1

Жыл бұрын

Hey Seth - great tip. I did get some PL Foamboard adhesive. Planning to bond foam to aluminum. Now, will it work with EPS - the white “lumpy” foamboard - made with beads (as opposed to the smooth XPS.) ? Thanks much.

Dissolve the plastic in acetylene until you get a thick syrupy glob. Put it in the seam to be glued and you get a really strong joint.

Thank You So Much.!!! I appreciate your through work.

@thelwood

2 жыл бұрын

Thank you!!

That's some really useful info. Thanks.

Thanks for the review of materials

As a retired cabinet shop owner I have have a fair amount of experience with glues.. I see in your butt joint to flat panel you are glueing a raw edge to a flat panel with appears to be a finished surface.. Try coating the raw edge with glue and allow to dry and then reapply for finished joint.. We used a lot of melamine glue in the shop that is like a vinyl base.. I believe you can use waterborne contact cement for glueing panels together..

@thelwood

2 жыл бұрын

Thanks for the suggestion! I definitely do that with wood glue when I am doing butt joints, I will give it a try on the foam!

Glitter grabber primer paint Works great as an adhesive for pink foam

@thelwood

2 жыл бұрын

Interesting! I will have to try it out, thanks!

@mymai5859

11 ай бұрын

Glidden Gripper Primer paint

Also hot glue guns are probably stronger than everything except the foam glue and maybe even that since it will work over the plastic coating around the exposyareas.

I bet it’s super lite on sturdy with the thin wood for stiffness

Great comparison of glues. I wish I would have known foam fusion when I built my trailer. I got pretty good with the Gorilla glue though. One adhesive that is a pain to work with, but works incredibly well is Great Stuff expanding foam. I used it in places that were impossible to clamp except by holding it. It sets up very quickly, and works as well or better than the Gorilla glue as an adhesive.

@thelwood

2 жыл бұрын

That's very interesting! I have never heard of it. I will have to check it out! Thank you!

@user-bg4py3bc3t

2 жыл бұрын

Церезит Хейнкель, особые условия в Северной Америке. (Ceresit СТ 84 Express PLUS) я на пенсии ничего не продаю ничего не покупаю👍

@astrobouncer487

Жыл бұрын

@@thelwood I have worked extensively with foam for years building things out of them, using polyethylene, ldpe, styrofoam, xpanded (xps) foam etc. One thing to know about great stuff is it will indeed keep expanding, sometimes for years. You can test this yourself by painting and sealing a small 1 to 5 inch glob of it after a week or more of it drying. Cracks will appear in the paint as it bulges outward from the expanding pressure. I even tried waiting 6 months to paint things made from expanded foam, and they still expanded.

@thelwood

Жыл бұрын

@@astrobouncer487 thank you for the information!

Nice, complete, and clear to understand your instructions... video

@thelwood

11 ай бұрын

Thanks!

Thanks so much for this information.

For theatrical props, I've had good luck using Super77 adhesive. I also use bamboo skewers to help keep parts aligned. You can also use coarse drywall screws to hold it while the glue cures. Hand-screw only, obviously

@joshua43214

5 ай бұрын

Super77 is Gods gift to adhesives. Love the stuff, hate the price...

Super useful info. Thanks!

Nice science. Appreciate the work you put into it.

@thelwood

11 ай бұрын

Thanks!

Excellent lesson!

Bravo ......yep polyurethane.......sika adhesive.........lowes in cement section .........flexible and paintable ........cheers

Elmer's makes the cheaper form of the Gorilla Glue. The secret is to mist water over the glue before you attach the second piece. If you try for a spiral of glue on a large sheet of foam and the glue line crosses itself (making a closed circle) you seal in the misted water which will still be there when you pop the two sheets apart. (Glue spreaders are hard to work with because you want a very thin layer.)

@thelwood

Жыл бұрын

Great information! Thanks!

Great information! Well done! Thank you.

@thelwood

11 ай бұрын

Thanks!

New subscriber! Fantastic video, thanks!

@thelwood

Жыл бұрын

Thank you!

Great video keep up the good work.

@thelwood

7 ай бұрын

Thanks!

That was crude but adequate testing - which is all that is required. Thanks, Foam fusion is the glue for me! One thing I want to experiment with is lining the EPS foam with aluminium sheet (1mm or thinner). First I need to get some foam fusion and see how well that bonds the aluminium....

@epicsurvivors1399

11 ай бұрын

They sell those

@BenMitro

11 ай бұрын

@@epicsurvivors1399 The ones I've seen are with open cell foam - "foamboard"

Great testing! For small projects, you may like Foam-Tac or Foam-Cure that RC airplane builders use. They are flexible, so that may not be as good for rigid construction type foam. I wonder if Lexel would work well.

@thelwood

11 ай бұрын

Thank you! Great suggestions, if I do a repeat test I will check them out!

I use PL Max construction adhesive. Perfect for XPS foam like Foamular

I had very good adhesion on face-to-face gluing with latex paint. separation quite often broke at the foam. Found that out gluing 1 inch foam pads for a TV stand.

@thelwood

10 ай бұрын

Interesting! Thanks for sharing!

Purpose of the video aside, I LOVE your shop!

Have you tried ratchet straps for clamping? Really excellent securing curved forms

@thelwood

2 жыл бұрын

Ratchet straps are great! I used them on my wooden teardrop! The reason I didn't in this one is because the sides were already cnc cut before I got involved and the roof had to go between the sides instead of on the top (which is how I would have done it) and then ratchet straps would have made life much easier! Thanks for the tip!

Thank you for doing the research!

@thelwood

Жыл бұрын

You're welcome!

I havent used it on foam but leak stopper clear may work good but will take some time to dry

Have you ever tried DAP Weldwood, The Original Contact Cement? I've never tried it with the pink foam board like you're using, but I have used it for over 30 years for making and gluing up custom closed cell foam saddles (and for adhering them to Royalex and other types of plastic) when outfitting whitewater canoes and kayaks. It's very difficult to get a good foam to foam or foam to plastic bond on many of these hulls, but when done properly, I've never had one fail yet. These saddles often spend a lot of time either completely submerged under water or at the very least, the glue joint is always wet for several hours a day (while paddling in hot or cold conditions), and they take a real beating on a daily basis w/o letting go. DAP Weldwood is made to adhere to Foam, Cloth, Metal, Leather, Wood, Plywood, Particle Board, Decorative Laminates, and Fiberglass. You need to rough up and brush or roll a good coat to each side of the object being glued, then wait a few minutes while it sets up (as per instructions), then press together firmly, and you'll probably never get it apart again. There are only two downsides to this product that I know... (1) You only get one chance to position the parts as you press them together, so you absolutely have to get it right the first time. (2) The fumes are very strong and can ignite from pilot lights, so you need a well ventilated space to work in. I swear by this stuff, and it's great for laminating several layers of foam (or whatever) together if needed, while also producing a pretty much waterproof bond. I'm almost positive it would work with the pink foam too, but would definitely test it first, just in case it did melt the foam when you applied it. The stuff I use is an oil base and has thinners that could dissolve the pink foam, but these are also the same thinners that evaporate while it sets up, before pressing the parts together. Not sure if this product is available in a water base or not, but if I ever build a foam camper, I'll definitely try it out to see how it bonds to that pink foam, before building mine. (Sorry for the long comment). And thanks for your glue test!

Also, you use wooden skewers that you use for shishka. Bobs I used to stick that in through the phone to give it reinforcement

Great experiment

@thelwood

2 жыл бұрын

Thank you!

Do you reinforce tour joints with nylon winddow screen fastened with latex paint ?

The Dow foam has a coating on the factory surfaces that must be sanded off in order to get a good bond. I use it in my aircraft designs with epoxy.

@thelwood

8 ай бұрын

We did sand the trailer, the edge to edge joint best represents the bond without any film. I was impressed with how deep the foam fusion bonded even through the film. Epoxy is great! Just wanted a one step, non fumey option. I bet your aircrafts are really cool!

Awesome do you take orders I like something light and basic that I can tow behind my Electra glide

Might I suggest using great stuff spray foam. It worked fantastic on my foam boat.

I have built a foam and fiberglass kayak and found that epoxy produces a bond that is stronger than the foam. And if you mix up some epoxy and fine sawdust or wood flour to make fillets, the strength more than doubles.

@thelwood

11 ай бұрын

Great information! Thanks!

I’ve always used the regular gorilla glue with great results. Yeah it’s a pain to work with and lots of clean up trimming involved. I also have used different wood working techniques for gluing and joining the foam boards, such as finger joints, lap joints, mortise and tenon, scarfing etc, with strong results. All this being said, I will definitely try the “Foam Fusion” glue!! Thanks for the video 👍🏻

@thelwood

Жыл бұрын

Thanks! Yes, gorilla is so messy! And definitely woodworking joinery to increase surface area is definitely a great idea!

Might be worth a look using Marine foam core boards, they come in different density's and thickness. You can also get them pre-scored for going around corners. Designed to be used with fiberglass, Carbon Fiber and composite layups. Just to give you more options.

@thelwood

Ай бұрын

Thank you! Marine foam sounds like a great option

Wouldn't cutting small lines (scoring) the joints where the glue would go stick better has the glues would go inside the form some??

Great test THX

Gorilla Heave Duty Construction Adhesive worked great for me.

@thelwood

11 ай бұрын

Good to know! Thanks!

With the gorilla glue original, you only use a little bit you get a credit card and scrape it so you there's a thin layer. I used to buy this clear glue from one of those cheap shops in Australia. It clear, bit had not of smell to it and was warm on the skin, took a few hours to dry but it would never break where the glue was. They stop selling it, I was so annoyed.

@thelwood

2 жыл бұрын

That is a bummer! Thanks for the tip on gorilla glue!

I like a spiked roller to texture the surface. It helps the glue penetrate the foam.

@thelwood

11 ай бұрын

Great idea! On the teardrop we did a combo of sand paper and a wall paper remove to scuff up the surface

@thelwood how would I make the poor man’s fiberglass on the inside. Do I need a frame for the teardrop or are the walls and roof enough. And would it be a good idea to add a small layer of wood on the inner walls instead of PMF

I'd go for marine epoxy. It literally bonds to everything.

Regular gorilla glue works great on foam, dont add water/spray water to the foam, thats for wood application, the wood will absorb the moisture out of the GG before it can bind with the other piece of wood. Gorilla glue will expand much more when you add water. Try it without the water, completely different results. I have no affiliation with GG but have used it many times with foam with good results. Your video was very informative, thanks for the Foam Fusion mention, had never heard of it before but will definitely look for it.

@thelwood

2 жыл бұрын

Thank you for the information! I will give it a try without water. But I definitely will be sticking with foam fusion as I can be messy... so the crystal clear color when it dries is awesome! I am happy you have been successful with GG. I definitely recommend you check out the foam fusion, the bond is amazing and it is so easy to clean up!

just a tip for people youll need to give the xps foam a sand before glueing ,and ive guys have great results from D3 wood glue and sanding then coating the xps foam with cotton canvas and d3 wood glue and roll it in with tiny roller then they used quite a thick almost tanking paint ontop for a rock hard outer finish

I learned from a completely different channel that the spraypaint won't eat the foam if you stand back a little farther. The propellant is the chemical that reacts with the foam, and it is mostly gone if you get a few more feet away.

How was your plaster for 30 years and we did this system called dryvit it was a phone that you stuck to the wall and you put a Veneer plaster with a mash-up over it well when we didn't have the right stuff we was use tubes of liquid nail and a caulking gun and it works great you might give it a try

@thelwood

Жыл бұрын

Thanks for the tip!

Gorrilla glue clear defintely does expand especially if you get it wet during curing just not as much. It actually says in the insructions your supposed to wet it. If you put some sort of reinforcement tape over the joints it will make it a whole lot stronger too. You could clamp it by putting a board on both sides and then applying a clamp

Need to try marine adhesive

I've heard to use just expanding foam insulation Supposed to work wonders

@MHLivestreams

3 ай бұрын

it's basically bubbly super glue. Same stuff.

Tape is enough for foam. But if you want to clamp or use straps you can put "sacrifice" pieces between the foam and clamps/straps. Or even leave excess on the edges under clamps/straps to be sanded or shaved off later with a surefrom file. The latter is what I do when gluing up blanks for surfboards.

@thelwood

11 ай бұрын

Great advice!

For joins that don't require sealing and don't permit clamping but need structural strength quickly, spray cyanoacrylate might work as well as it does with wood end grain.

@obsidianjane4413

11 ай бұрын

Superglue dries very hard which makes sanding and shaping the foam afterwards difficult. You wind up with ridges and dimples where you try to sand the seam but take more of the surrounding material instead.

Oooooo!!! Look at the dust extractor!

@thelwood

11 ай бұрын

My favorite part of my shop 😀

Love this video, I saw your pmfg video, will you use foam fusion for pmfg as well?

@thelwood

Жыл бұрын

That is a great question! I used titebond 2, but I would be very curious to try a sample with foam fusion. I am pretty sure that canvas would stick to the foam better so the key would be to see how the paint process goes. I think it would work great, but I am not sure.

On our rockets we use super glue with activation spray. Fins are reinforced with glue fillets.

Cover the outside and inside with a non stretchy fabric and resin. Denim shirt fabric would be cool. Blue face outside chequer face inside. That would be insanely strong.

Has anyone tried spray foam instead of glue and then sanding down until smooth? What about using woodworking joinery?

Latex paint works like a charm. can be hotwire cut.