great vid, printing molds is something that really needs more attention.

Nice video. Thanks

great video pal.

Thanks for the video mate! Another tip is to use heat insert nuts for stuff like this that is to be assembled and disassembled regularly, looks flash when the nuts are all done properly.

Nice Shane , cool idea :-)

@1973shaner

6 жыл бұрын

Thanks Don - Its not an Original idea but there doesn't seem to be many videos on using a 3d printed molding for casting polyurethane so I thought I would share.

Very good covering vid! Not deserving this low views though! I guess it's too long for most wanderers to keep their attention, i'd suggest You making an "overview" version showing the key steps and refering to this, the original vid for all the technical aspects of the process. However there is one thing You left me wondering: how sensitive are this materials and overall process to a temperature they placed in? Should i keep it in somewhat room temperature or does it even make a difference if i'd try it on a fairy cold day outdoors? Thanks for the video, keep up creating a cool new pieces to this world we live in!

I was like WTF he is pouring half of it on his bench but then I realised it's the cracks on my phone screen giving that illusion LoL

Thanks for the video, also good design for the mold! I did not expect the release agent and silicone spray combo to work that well! Have you tried PETG filament for printed molds? It is a bit more flexible, may help for more complicated parts..

To help fuse the layers, and smooth out the surface, would it help to cure the PLA mold in the oven?

Would a rigid mold like this work with a harder polyurethane casting material? Or would you go to a silicone mold for this?

Hi. Nice work. Have you even tried to cast harder polyurethanes, like vith a shore D70 or similar? I once tried with PLA mold, but I was not able to get the casted part out of the mold (probably I used the wrong release agent, I think it was vaseline). As I recently bought a resin printer I am thinking of trying again and print a mold in a elastic resin. Maybe it would be easier getting out the hard casted part from a soft mold (treated qith the appropriate release agent.

@JavierCamacho

5 жыл бұрын

Pär Nilsson i did the same as you and couldn’t get the parts out of the mold. Maybe I’ll try it once more with a different release agent

Really good quality camera, don't worry, what type is it? ( at 720p)

what was the setting time

hi what flexible resin you suggest for flexible toy figures what casting so I can make joints etc . level of softness . found something but is us product I live in EU. thanks in advance !

maybe if you put the mold on scales then zeroed out then filled up each mold

If you now go to cast again -- do you need to reapply all the release agent?

@Rob_Teh_Builder

3 жыл бұрын

Yes, you should clean the mold and recoat it with the release agent :)

How did you split your parts in Fusion 360?

Hello, In what material did you print your mold ? In PLA ?

@1973shaner

6 жыл бұрын

Rowhider RC & Racing . Yes . just cheap PLA.

nice work. did you do any post processing to the 3d printed mold? what layer height did you print them? thanks in advance.

@1973shaner

5 жыл бұрын

Hi Mortaldrumming - apologies for such a late reply. Yes the 3d printed parts were sanded down to a super smooth surface and then coated with the release agent.

@1973shaner

5 жыл бұрын

Layer height was 0.12mm

@Tyler-qz9uc

Жыл бұрын

What release agent?

would you say the molding parts are cheaper than if you 3d printed them?

@1973shaner

5 жыл бұрын

Hi M House - in general molded parts will usually be cheaper and stronger than a 3d printed component. In this example the parts would work out cheaper to cast in polyurethane than they would be to say print in a flexible filament. bought by the kilo the materials are cheaper and in terms of time the casting process wins by far. The main issue with moldings is the time taken to design and make them, once the mold is made then the casting is a fast and cheap process that allows the mass manufacture or multiple parts quickly in comparison to 3d printing.

@MHouseOne

5 жыл бұрын

@@1973shaner what polymer do you recommend for non-flexible durable output? i'm finding its hard to beat the price of PLA part ($12 per 1KG roll) vs molded Polyurethane part.

Great info, but as far as I know when a liquid is "viscous", it normally means "thick", so PU is actually not as viscous as e.g. silicone. I sometimes have to look it up, though, haha. I was amazed how good a release you got on the parts - so, thanks for showing that it is not that hard to obtain a good release.

Nice work pal! Are the polyurethane parts thermo moldable if submerged in boiling water ?

You can put it in a vacuum chamber to get rid off air bubbles before it cures. All you need is an air tight box, and a vacuum cleaner.

@1973shaner

5 жыл бұрын

Hi Build 'n' Fix - Yes I have a Vacuum chamber and pump set up but as I said in the video I wasn't going to show that in this example. And unfortunately a standard vacuum cleaner will never produce enough vacuum to extract the air from polyurethane as it is very viscous and does not release the majority or trapped air until a vacuum of around -28 in/mg - / approximately 85% vacuum. A modern standard vacuum cleaner is designed for vacuum flow and not 'absolute' vacuum performance and simply can not pull hard enough to release air from these thick materials.

tell me about the isocyanates in part B. My understanding is that you SHOULD be wearing a respirator - no, not a dust mask. Not being smelly doesn't mean something isn't f***ing dangerous. Don't they tell us Carbon Monoxide is odourless?

@mrb2917

3 жыл бұрын

drop the attitude, you can be helpful without being a prick

Those are beautiful. Can you make me a mold for a fee??

I respect your effort but this isn't a short video it's half the length of a feature film. It would be much more watchable at 5-8mins long, not 41mins.

i liked the information but the video was too long.

Good info but way too long :-) I watched in five minutes skipping and didn't miss anything. Good content though so just try and edit out the filler :-)

This could have been a 15 min video. Get to the point and say what You're going to say - once! Content is OK, but You need to speed up the action.

pointless to be honest, such a simple shape a rubber mold would do the job.-

@ELValenin

4 жыл бұрын

Yeah but is the rubber mold as easy to make as this mold? I don't quite think you got the point of 3d printing