Thank you for your video. Very interesting design of the mold frame. Cheers!

You don't need to tape the holes, the plastic will take care of that by itself. Try elevating the items a couple of mm from the pegboard. Also, a hinge and a couple of metal latches would make it faster than screwing the frames together to hold the plastic sheet. Cool video BTW. Thanks for sharing.

Thank you, friend. Your video has been very enlightening. Hugs. Raul / Brazil.

Hi, Try it without covering the holes. Also, a little less heat and raise the molds up higher to take up the slack in the hot plastic. Use something as a riser. It should be a little wider than your mold. The webbing that you are getting is because the plastic sheet is either too hot or there is not enough mold for the sheet to form to.

I want to make a board like this too but might need to use smaller sheets of plastic, so in this video you taped off the areas that I would not need for the smaller plastics. I need one vacuum board but may use different sized plastic sheet holders, so taping off the areas I won't need is a great solution.

love this design

"Hoover in the hole, plastic in The oven". Lol

Use 0,7-1,5mm HIPS (high impact poly styrene). You don't have to tape the vacuum board. Good luck.

Nice build!

@ROBOFORCERX2000

10 жыл бұрын

Thanks, just need to get it working properly:)

I saw in some other videos that they raised the mould about half an inch so that the plastic can wrap around the mound. I noticed that this video is a long time ago. Did you managed to get it working properly?

@ROBOFORCERX2000

8 жыл бұрын

+Christopher Loh Yeah man, it's working now, I took on board people's comments (about raising the mold as well) and got it working:)

@chrislohtt1960

8 жыл бұрын

+ROBOFORCERX2000 Nice to know it is working.

I wonder if you have more holes in your upper highest piece then it would gradually pull and seal as it goes down ? Im just guessing.

@ROBOFORCERX2000

6 жыл бұрын

More likely yes:)

I think you ought to remove the tape. The uneven pull is what is causing the snots. I think you were doing right with the hot air gun.

thanks for sharing your experiences with vacuum forming. Would the issues on the second attempt be alleviated with less vacuum pressure? Just curious. Keep us posted! I'd like to see what works!!

@ROBOFORCERX2000

10 жыл бұрын

Yes, I think you're correct- second attempt went completely wrong coz by the time the pressure built up, PET was already cooling down and hardening... I think the best way is to have a vacuum tank with a quick release valve, but I've no space in my garage for that, or a heater box, so have to milk the situation with oven+hoover:))

On the one hand you over-engineered this thing but I have to credit how you took so much into account, it may not have worked as planned but you left few stones unturned. I want to see the video where you get this right because I'm contemplating a project also!

thank u for sharing

What is the minimum vacuum pressure of the vacuum cleaner.... For the suction

@ROBOFORCERX2000

6 жыл бұрын

I have no clue:) I used a normal size vacuum and there was plenty of suction

Where did you get the plastic from?

@ROBOFORCERX2000

7 жыл бұрын

From Hobbyking. It is 0.3mm thickness PET which is clearly too thin for this.

it's good!

Hi Robo Where are you getting the lexan from

@ROBOFORCERX2000

8 жыл бұрын

+Paul Bignell It is PET. I got from Hobbyking (turbine parts section), but the thickest they have is 0.3mm, which is way too thin for my needs. I'll have to look for stuff elsewhere and rebuild my box coz it doesn't fit fully in the grill. It works, but not as good as I want to:)

@paulbignell6977

8 жыл бұрын

+ROBOFORCERX2000 thanx for the info and the reply

You need a valve to adjust suction pressure, low at first to slowly suck plastic down controllably and then high to get definition. Presently, you have way too much suction in the beginning, maybe throughout. Good luck!!

@ROBOFORCERX2000

9 жыл бұрын

I've tried with lower suction (it's my hoover that I'm using:) and found it even worse coz that thin PET was cooling down way too quickly. I think it will work if I have something heating PET while pulling the air out. Oh well, still more tests to come, cheers!

Did you ever get it running right?

@ROBOFORCERX2000

9 жыл бұрын

I did, but used it only once after. Following suggestions in the comments I raised the mold up a bit and didn't tape the holes, that's all there was. Also 0.3mm PET I used is good for nothing, just too flimsy, up to 1mm thickness is needed. And of course I need a heating box coz the top frame doesn't fit in my oven- I have to heat it with my oven open and keep on turning around:)

@stuarthumphrey583

9 жыл бұрын

Oh lol well I'm thinking of giving it a go so will post some bids my self

@stuarthumphrey583

9 жыл бұрын

Vids even

Don't put on tape otherwise the air bubbles over the tape can't get out while trying to reach the holes and the plastic doesn't allow the bubbles to get out and you get deformations

nice build! may i do a suggestion? your plastic material looks and sound very thin and flimsy! try a stronger material, or not that much heat!

@ROBOFORCERX2000

10 жыл бұрын

You're right on this, PET that I had was way too thin. Well, it was my first forming, so now I know more what to do next:)

@dwillmml

10 жыл бұрын

ROBOFORCERX2000 You need to use PETG. PET will never work. I made all the same mistakes you did. I like the idea of the heat gun after the vac is on... I'm going to try that.

Don't tape the holes

Friend, this plastic is polypropylene?

@ROBOFORCERX2000

9 жыл бұрын

It is PET, but the one I had was way too thin.

@rcprioli

9 жыл бұрын

Thank you. Raul/Brazil.

The plastic your using is to thin i use HIPS 1.5mm thick for my F550 canopys also you need to make a heating box to heat up the plastic evenly and make sure you lower the plastic down on the mould evenly without getting any kinks in the plastic

@ROBOFORCERX2000

9 жыл бұрын

Cheers. will look into this HIPS, it was the first build/test anyway and now I know more what to do or not to do:)

try using 0.5 pet

Don't tape the holes you aren't using

@ROBOFORCERX2000

9 жыл бұрын

I got nearly every second comment suggesting me not to tape the holes and it's going on for a year since this video, but thanks anyway LOL

@michellesullivan3927

9 жыл бұрын

ROBOFORCERX2000 I own a graphics company and we do a ton of sign work using this method. There are just a few minor things wrong that if you adjust you will have perfection every time. Get rid of that frame your using. There's no need to have that frame reaching over the sides like that. The time it takes to line that frame up to slide over the table could be 1-2 seconds however that short amount of time is long enough to allow the plastic to start to cool. Build another frame only this time when you build the bottom where the plex will sit, you need to rabbit it out so that the plex sits inside the rabbit and cant move around. On the bottom plate that holds your plex also place a rubber seal there so that when you drop it to the vacuum table you have rubber on rubber which gives you a air tight seal. Place rubber on both the bottom and top plate also so that when the plex is between them theres a rubber on rubber air tight seal there also. Again don't block off the holes around the project, this is the reason you are getting the veins. Your drawing all the air down to one area when it needs to be drawn down further out from the project. When you put the plex between the lower and upper plate that sits in the rabbit, the upper and bottom plates need to be either clamped together all around or screwed together. Again you dont want the plex to move. In other words the pulling edges need to be as stationary as possible. And dont do more then one project at a time. In this video you have 2 different things you are covering but they are not only 2 seperate items they are also 2 different heights. This will play a role in how the soft plex falls into place. So, this might all sound like a lot that you need to do in order to get it right. Buts its really all just minor adjustments and you will be off and running. And always have your vacuum running prior to the drop

@ROBOFORCERX2000

9 жыл бұрын

Michelle Sullivan That's a lot of useful info, thank you!

@michellesullivan3927

9 жыл бұрын

ROBOFORCERX2000 Your very welcome. I want to see you succeed. Ill be making a video soon on my husband and I building one and using it probably this week if not next week. Might give you some better ideas

@flyurway

6 жыл бұрын

I wish I knew exactly what you're talking about here because I'm going to need to understand it too!

Don't tape over the holes.

Nebepamenu kada skraidziau jau... Orai ne kazka, salta...

NO EQUAL HEATTING TO THE MATERIAL...

with all that snot i think you need a tissue...lol

the tape creates uneven suctioning (don't tape it) and the plastic is not evenly heated, this is what is causing your problem

@dwillmml

10 жыл бұрын

I too tape my board, not because you get a less even vacuum, because you don't, but the finish product looks better when you don't have the dimpling over your flats. Air will go where it needs to, its good like that.

Комик. Сначала включай пылесос и жди пока он заработает на полную мощность! Только потом одевай пластик!

uh tha tha thu thu thu thu thu thu themesong for frustration

Wtf