I'm afraid I'm with the 'it's not an anti backlash nut' brigade, the word anti means preventing, your nut isn't preventing anything, it's simply stopped it happening for the time being. Not that it's bad what you have done, I think it's fantastic. If you search for an 'anti' you will find its a very specific 2 piece device with springs in the middle pushing it apart. I like what you've done here, a self lubricating interference 'nut' and a tap made from the leadscrew without wrecking it, brilliant! I'm going to use this method to get rid of the backlash in my crossfeed screw, thank you. Oh yes, and another thank you for not talking to camera for half the video like far too many do on YT!

Thanks for directly go to the point and not waste 10 mins talking.

@MaxMakerChannel

7 жыл бұрын

+Marcos Ledesma burelli Thats what I do. Thanks for subscribing!

Looking at the last few frames of your video I see that you left a slit in the delrin bushing, allowing it to be tightened by shimming in future. I think that subtle feature was missed by many people. It's a very good solution for your application. I manufactured delrin bushings in-situ a year or so ago by pouring fine delrin shavings into the gap between a 1/2" bolt and a 1" ID steel tube each side of a nosewheel leg support and then melted it in place by heating the steel tube with a propane torch and then tamping it down. After 4 or 5 repeats I had a pair of 3" long, hard, low-friction bushings cast into place that are a perfect fit and will last for a great many years. I fly that aircraft often. The pair of delrin-bushed bearings comprise the main pivot for the folding gear leg. This is not an ultralight or powered kite either - this is a heavy little 2-place airplane and that pair of delrin bushings takes all the landing loads on the nose leg without deforming. The inside of the steel tubing still has the seam where it was formed and the delrin molded perfectly around those deformations, thus locking it into place, so that only the pivot bolt turns and not the bushing.

For all the effort, this is just a 'zero backlash' nut when manufactured. An 'anti backlash' nut has to compensate for the backlash that creeps in over use. And I don't see this happening in this.

@davemwangi05

5 жыл бұрын

how is does antiblacklash works? Actively how?

@derrytoolsltd991

4 жыл бұрын

@@davemwangi05 you can eliminate backlash by using a split nut in which one internal thread contacts the left flank of the external thread, and in which the other part of the nut contacts the right flank of the thread. Over time and during wear, you need to adjust the gap in the nut to get the threads touching both left and right again. Alternatively you can mount a second nut on the thread which can be adjusted tight into or away from the other nut to force one side to contact for each nut.

@davemwangi05

4 жыл бұрын

@@derrytoolsltd991 I've seen only those using a spring to actively control that gap. What do you think about the idea of using a spring to keep the gap versus your idea of always coming back to adjust the gap manually? which one is better?

Nicely done! Thanks for sharing it!

@MaxMakerChannel

7 жыл бұрын

+Mark Lindsay Thank you! I hope people can use this information.

I would never had thought of doing this!

"Lets Make - A Cheap Anti-Backlash Nut for Lead Screws" Meanwhile me sitting looking at amazon where AB nits are literally $1 next day delivery

Nicely done - thanks for sharing! :)

@MaxMakerChannel

7 жыл бұрын

Your welcome!

Amazing editing. Backlash nut is good too, ha.

@MaxMakerChannel

7 жыл бұрын

+joshmnky Thank you!

This is very clever, entertaining too! :)

@MaxMakerChannel

7 жыл бұрын

Thank you!

Very creative, not the direction I expected!

@MaxMakerChannel

7 жыл бұрын

+EvilPlagueDoctor thanks!

great idea !

@MaxMakerChannel

7 жыл бұрын

+C AZEVEDO Thanks, but I was not the first to have it. Apparently this was in a magazine a few years ago. I was only the first to make a video about it.

As others have stated this is simply a nut no anti backlash feature. However it is a very clever idea.

@MaxMakerChannel

6 жыл бұрын

I can measure no backlash, so there is no backlash.

@tvideo1189

3 жыл бұрын

@@MaxMakerChannel Meaning it is, at present, a zero backlash nut. After a few thousand cycles, guess what? Backlash will start creeping in. This is NOT an anti-backlash nut.

@fbloggs

Жыл бұрын

@@tvideo1189 who cares? make a couple of spares and simply swap it out in a few years or when it exhibits backlash again.

@tvideo1189

Жыл бұрын

@@fbloggs Bwahahahah! Necrothread much in your spare time? Responding to two year old post. Funny stuff there! And by the way, he could have made an ACTUAL anti-backlash nut very easily by merely making the split nut AS a split nut, screwed together like a clamshell with a bit of space between allowing tightening to zero... over and over again instead of playing pyromaniac with torches and gobs of melted plastic. Bwahahahaah!

Made this today from a HDPE (High Density Polyethylene) Plastic Rod. thanks for the very good idea.

@MaxMakerChannel

7 жыл бұрын

+Chris Amarillo Does it work?

@chrisamarillo

7 жыл бұрын

It looks oke, but i'll have to test it on the machine to know.

So much love

nice idea

@MaxMakerChannel

6 жыл бұрын

+V1P3R'S lab thanks

That's a godd idea. How many time will it work without backlash ? Have a idea of the initial cleareance ?

@MaxMakerChannel

6 жыл бұрын

+CNCFONTAINE There is no clearance. It works on my cnc since 2013.

@CNCFONTAINE

6 жыл бұрын

Ok, cool !

you just got a new subscriber

@MaxMakerChannel

7 жыл бұрын

Welcome! What do you make?

for those less studied in mechanics, molding and machining, who simply want to get into CNC or the like... maybe explain what you're doing and why?

i really interested with your cnc machine, you should make a video about that machine

@MaxMakerChannel

7 жыл бұрын

+Gissa Giswara Will do at some point!

My salvation friend.....thanks for sharing

Could probably 3d print this with Igus delrin filament.

Anti backlash? This is NOT anti backlash unless your talking about the first time you use it.

@delcat8168

3 жыл бұрын

Yes, but the principal can be used to make it anti backlash... cut it into two and spring load the two halves together. Other solutions are also available.

dumpstercnc sells 1/2"-10 ACTIVE anti-backlash nuts for $18. This one here isn't really anti-backlash.

Nice work. What kind of plastic is that? Acetal ?

@MaxMakerChannel

6 жыл бұрын

+Machinist Nick Yes Acetal or POM.

Hi, really like this take on making anti backlash nuts. Maybe a bit off-topic but I see that you use these on what seems to be quite a large format cnc router? Are you happy enough with the speed and precision these standard trapezoidal lead screws provide? No whipping on the long axis?

@MaxMakerChannel

7 жыл бұрын

+Niels Samuels very very happy. There is no whipping since the steppers don't go fast enough. I would chose a bigger lead screw though. 25mm over 16.

@nielssamuels5465

7 жыл бұрын

Good to hear! What size steppers and what drivers do you use? you now use 16x4 screws right?

@MaxMakerChannel

7 жыл бұрын

+Niels Samuels yes 16x4. See the instructable.

Good vid'. What plastic was used?

@MaxMakerChannel

3 жыл бұрын

Thanks. It was POM or Delrin.

Well... That seemed a bit pointless.. If you were going to cut into an acme rod anyway, why didn't you just cut out four slots, and then use the lathe to cut a taper to create a tap? Then you could have produced the same part, without the need to introduce weak points, fissures, and voids in the nut? Seems like a lot less work

@MaxMakerChannel

7 жыл бұрын

This way it is a very tight fit.

nice work. that cough? from the smoke? haha.

@MaxMakerChannel

7 жыл бұрын

+SES NINE What cough? I had the garage door open. The fumes are not great.

@davemwangi05

5 жыл бұрын

@@MaxMakerChannel you coughed like an elephant sniffing pollen. Hehehehe.

From what material Did you made the nut?

I spent weeks trying to make this work. Under load the plastic distorts so it looks like backlash.

@MaxMakerChannel

Жыл бұрын

Maybe make the nut much longer?

@rgsparber1

Жыл бұрын

@@MaxMakerChannel I didn’t have the room nor torque for the added drag.

What is the purpose of sawing the tip of the screw at the beginning? Thank you very much!

@MaxMakerChannel

7 жыл бұрын

+Andres Valdes That turns the screw into a tap. The slots cut the thread. You melt around the plain end and then turn the screw to the other end where you refine the thread by cutting it.

@vandresv

7 жыл бұрын

Thank you so much.

You really shouldn't be heating POM with a blowtorch- it releases tons of formaldehyde when it decomposes

I really like your video. I want to make this anti-backlash nut for my metal lathe. I'm wondering where you get your POM (polyoxymethylene) for cheap. I found a place online with a 50mm(2") rod - 100mm(4") long for $200 USD! Thank you for any help. Also why do you cut the lead screw at the beginning of the video? I see that you show a tap by its side.

@MaxMakerChannel

7 жыл бұрын

David Rice That is crazy! I don't know where you live but in Europe you pay 10-15€/$ for that amount. I bought mine on ebay.

@davidrice9995

7 жыл бұрын

I found this rediculous amount at: www.goodfellow.com/catalogue/GFCat4I.php?ewd_token=ihnI1aLJ6EXFnv2OKOkpjYHTqkiOON&n=A96KRhswVf4z6bcwLzd4OfXdRWIomB&ewd_urlNo=GFCat411&Catite=OX317950&CatSearNum=1. I found a much more reasonable price on ebay 12" of 1.5" rod for $9. Thank you. I'm wondering why you cut the lead screw at the beginning of the video?

@MaxMakerChannel

7 жыл бұрын

+David Rice The cuts create cutting edges just like in a tap and die.

This is cheap but there is no stiffness and hardness. Thread will be ground and cause much more backlash.

Nice... though I'm thinking as an alternative you could make a mold around the lead screw and use a resin similar to what is used in skateboard wheels.. then turn it. either way... that's pretty cool. thanks for sharing

@MaxMakerChannel

8 жыл бұрын

+chase Thats a cool idea. Why skateboard wheels?

@YknotLearnall

8 жыл бұрын

+Max Musterman - the resin used in skateboard wheels is tough, durable easily molded. It's also used for many track systems, even roller coasters, camera dollies etc. It also comes in just about every color one can imagine. all types of hardness, etc. that and it was the first thing that came to mind. heh heh. But rather than melt it on. you could pour the resin. Any flavor you like... and get a sure fit. Just spray with a release agent and breaks free. Instant lead nut. You could even mold in mount screws if you had a jig set up. Of course this is all theory... I haven't tried it. But after seeing your video.. it sure seems plausible. Sounds plausible saying it out loud... seems possible thinking it over... what's your thought? You think it would work?

@MaxMakerChannel

8 жыл бұрын

+chase Alright. Never came into contact with skateboards, but they look quite slippery. I always wanted to do a mold making project, so I think Ill might give this a try. Also got another build video planned with a linear actuator where I need a new nut.

@YknotLearnall

8 жыл бұрын

+Max Musterman - So looking forward to the new vids. Good thing I subscribed!

@MaxMakerChannel

8 жыл бұрын

Thanks!

Great implementation, but have I missed something? Have you just made a long close-fitting nut, or is there some actual backlash adjustment there? Is there any backlash at all in this nut? I love the shortness & relevance of your video.

@MaxMakerChannel

7 жыл бұрын

+Mark Smith When the nut cools down it shrinks around the lead screw and is in contact with both sides of the thread. I measured the backlash with a dial indicator and there is none recognisable.

@stoparret

7 жыл бұрын

Right, but that's technically not an anti-backlash nut, it's just a close fitting nut. It will wear and then backlash will emerge. An anti-backlash nut has a mechanism (typically a spring) that forces the nut to expand to take up the lash as it wears ...hence it's name. Tight nut =/= Anti-backlash nut.

@MaxMakerChannel

7 жыл бұрын

+stoparret I know. We had this argument a while back. For an industrial machine this would not be good, but for my homemade CNC it lasted for 3 years now with no signs of wear. And if it does, I can make another set in an afternoon for little money. I saved the money over ballscrews which would have been a lot, because my leadscrews are 2m long.

@MaxMakerChannel

7 жыл бұрын

+Marion Peretti I mill Aluminium with this.

@ducatista1098s

2 жыл бұрын

When you inevitably get measurable backlash, can you reheat and shrink this nut back onto the threads or is it thermo set?

If using a nut made of something other than metal was a viable option the manufactures would have jumped on it. It would only take a small amount of force to distort the thread in the plastic nut.

@MaxMakerChannel

3 жыл бұрын

My CNC is still running and very well : )

@garylgray2060

3 жыл бұрын

@@MaxMakerChannel , I can see it working and holding up on softer materials but not on steel or aluminum unless the cuts are really small.

you should try some polymorth, mouldable in hot water so no need for flames & toxic fumes.

@MaxMakerChannel

7 жыл бұрын

I thought about that and I use it in my other videos, but POM is better for long term wear.

@RabKirk

7 жыл бұрын

Its handy stuff but yeah ive never used to anywhere that it would wear

@MaxMakerChannel

7 жыл бұрын

+RabKirk I love that stuff. So many applications where it saves your day.

@fbloggs

Жыл бұрын

polymorph is not very hard-wearing.

Presisi tentunya.

Nice but it is of no use if it is not mentioned what wa added in the nut & melted . So that no back lash occures .

@Gjmahn

5 жыл бұрын

Fairly obvious that it was most likely the same material as the nut, POM.

Hey whatever works

Tap FTW

Very well done. However when you consider time, labor, materials, etc., is it cheaper and more sensible to buy something similar from Amazon?

@MaxMakerChannel

6 жыл бұрын

Can you buy something like this on amazon? It takes me about 30min to make a blank and another 20min on the lathe.

@bernardtarver

6 жыл бұрын

Did you reelly ask it I could buy an anti-backlash nut from Amazon? Plus, you're discounting the amount of labor involved, raw materials (how much does POM go for, who are my primary and secondary vendors?), capital equipment and supplies, and G&A (did you make that in one take, without any planning or prep?).

@MaxMakerChannel

6 жыл бұрын

Watching this video is enough Prep. The pom used costs maybe 3€. I don´t thinl there is a 16mm 2 Flute P8 metric lead screw anti backlash nut on amazon.

@bernardtarver

6 жыл бұрын

"Watching the video is enough prep," says all I need to know.

@togowack

6 жыл бұрын

Cost in Canada to import these is basically $40 each and if you have 3 axis like myself wearing out 4-6 mo it starts making sense

Muito bom. perfeito. Que material é esse? Teflon?

@MaxMakerChannel

6 жыл бұрын

POM or Delrin

@souzaneto8051

6 жыл бұрын

Max Maker Obrigado por responder.... Os gases são tóxicos ou não tem problema?

@MaxMakerChannel

6 жыл бұрын

Ne pas fumer... I don´t speak portoguese. The fumes are not good.

@souzaneto8051

6 жыл бұрын

Max Maker Ok amigo. obrigado...

@MaxMakerChannel

6 жыл бұрын

Si Amigo. Joao Gilberto pefeito!

How exactly is this an anti-backlash nut?

@MaxMakerChannel

5 жыл бұрын

All surfaces of the nut touch the leadscrew. Since they are in contact, there is no backlash.

Don't just tap it, taps can make a looser fit

This would be great...if it was cheap to make. Not like I have milling equipment already...hense why I'm trying to make it.

@MaxMakerChannel

6 жыл бұрын

I made this in my local maker space.

@johnrae2696

6 жыл бұрын

Max Maker that would help....im a beginner toetal work and trying to build a wood cutting CNC...so once I seen all the equipment I realized I wasn't able to do that as easily. However, I'm curious what material you used for this?

@MaxMakerChannel

6 жыл бұрын

I used POM, also known as Delrin. I did this before without the lathe. Looked like shit but it works. You can make the nut like in the video and keep it raw. Then you mount it to the CNC and fill the gap with polymorph or 2k epoxy putty.

@johnrae2696

6 жыл бұрын

Max Maker I'll look into that, I originally thought of using threaded rod, with two nuts, slightly separated, so it tightens up the "play". Any suggestions on if that would work better/worse? I'm currently in the process of researching and (pre)troubleshooting for my build over the next year or so.

@MaxMakerChannel

6 жыл бұрын

Well, threaded rod works but its not that great. Really depends on your budget. My CNC cost 2500€ and it payed for itself by making prototypes with it.

No real anti-backlash mechanism and being made from plastic should last only a few weeks before wear is a problem. Why not just buy a real anti-backlash nut or if you don't want to pay then 3D print one that would be just as good (you can adjust the thread to give minimum tolerance) and would probably last just as long plus if it wears you can just print another.

@MaxMakerChannel

2 жыл бұрын

This nut is still fine to this day.

POM creates formaldehyde gas(toxic as fuck) when heated. Hope you used mask while doing this.

@MaxMakerChannel

7 жыл бұрын

+Tomasz Węsierski No mask but I did near the garage opening and mostly held my breath and breathed outside.

these are not anit-backlash nuts, they are just nuts...

@MaxMakerChannel

6 жыл бұрын

They are

That's just a nut with a low amount of slop... not an anti-backlash nut... And over time, with wear it won't even be that anymore... it will just be a nut...

cheap with a lathe... come on!

@MaxMakerChannel

7 жыл бұрын

+pachanoid Use polymorph to mould it in position on your cnc.

This is dreadful. You dont even have the axis of the nut's shaft to the faces you have cut (watch it wobble its way down the leadscrew at the end). Why didnt you just use a solid piece and then tap it rather than poorly try and backfill it after clamping it around the leadscrew. The whole thing is exactly the wrong way to go about making a leadscrew nut, and it isnt even a zero backlash nut, or backlash reducing nut. Its just a nut.

@MaxMakerChannel

3 жыл бұрын

It has zero backlash. Love it or hate it, but since it is a slight interference fit it has no backlash. The CNC has been running for 8 years now without any issues or noticeable wear. You can watch it run in a few of my videos. Back then, ball screws were quite expensive, so this was an affordable alternative.

@jameshounslow

3 жыл бұрын

@@MaxMakerChannel It might have very little backlash, but it cannot have zero backlash. It also is not an 'interference fit' of any sort (interference fits do not and cannot move, otherwise it is not an interference fit). Firstly there is nothing in the design that accounts for slight variations in the manufacture of the lead screw - it will not be perfect and this is one of the ways that backlash creeps in and why backlash will not be constant across the whole of a leadscrew (the exception being if it is precision ground to a very high standard). Secondly unless you have something that will keep tension across the two pressure faces of a thread like a split nut or a ballscrew system the second there is any discrepancy between one of the pressure faces on screw and nut you have backlash. It sounds like you have a solution that works much better than the stock T8 nuts, and this is working for you which is good, but that doesnt make it what you suggest it is - Anti-backlash. If it works as you say it does then it is just a T8 nut that is a close fit.

subscribe? fuck yea

@MaxMakerChannel

7 жыл бұрын

+gigi172 Thank you!

that's not anti backlash..

@MaxMakerChannel

6 жыл бұрын

+Paolo Yes it is. There is no backlash.

@polloviz

6 жыл бұрын

Max Maker sorry but anti backlash means that there's some kind of mechanism that eliminate the slops by tensioning the threads of the nut. Maybe your nut has little backlash but it won't be completely eliminated

@MaxMakerChannel

6 жыл бұрын

Paolo anti backlash means there is no backlash. How it achieves that does not matter. I can put a dial indicator next to my cnc and there is no change in deflection when moving back and forth.

@cattaraugustonawanda4426

6 жыл бұрын

Eventually there will be backlash when the nut wears.

@MaxMakerChannel

6 жыл бұрын

+J Mc Eventually. I make these in 30min.

durability went home 🧐

@MaxMakerChannel

4 жыл бұрын

Still works : )

@mohamed_fawzy

4 жыл бұрын

👍👍👏

Cheap???

jajajaj cheap

Hm. Yeah. Uh, mind telling me what special energy drink you took to beat the devil at the the speed you moved to get that thing made in 3 min? And where can I order some? Gotta step on it and build a white two-story, 5 bedroom, 3 and a half bath colonial, with walnut trimmings, bay window, wet bar, and a basement bolling alley in about 3 days because I got some old high school chums from outta town unavoidably coming over by Friday to visit and spend a few nights and all along I've been fudging a lil about what kind of pad of my own I stay in and...I don't want them to think I'm some tinhorn who's nothing but all talk. Currently I live in mom's crib.

@MaxMakerChannel

7 жыл бұрын

SwarthySkinnedOne No alcohol, no caffeine, no medication, but vitamins.

@SwarthySkinnedOne

7 жыл бұрын

+Max Maker Well yeah, I figured as much it was something healthy of super epic proportions by the way you moved, faster than the speed of sound, by about 3 or 4 machs. (Ever raced bullets shot out of machine guns? Give it a try. I'm sure the results will be that I don't think even Ripley will believe it!) C'mon, give! Where ya get 'em? Told yah my pals will be over by Friday and I don't want to look bad when they arrive. Oh the disgrace I'll be in if I don't get them pills in a hurry!

@MaxMakerChannel

7 жыл бұрын

www.amazon.com/gp/product/B01FSZB0KA/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B01FSZB0KA&linkCode=as2&tag=maxmak05-20&linkId=0ea8cdedb2b96e9f681141a166a294c5 Three pills a day plus 5000 Units of Vitamin D and you are golden.

@SwarthySkinnedOne

7 жыл бұрын

+Max Maker Thanks! You're a pal. But 5000 units o...!?.Ddeeeyam!!

@MaxMakerChannel

7 жыл бұрын

+SwarthySkinnedOne You can hardly overdose on Vitamin D. Anything extra is flushed out.

We didn't see it working ???? I think its RUBBISH

Cheap? Worst name for vid.