Making Silicone Molds from 3D Prints for Beginners
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- เผยแพร่เมื่อ 3 ก.ค. 2022
- In this video I continue on my journey to a fully custom chess set by making a silicone mold using a couple new methods I haven't tried before. I walk through the process from start to finish so you can see all the steps involved in making a silicone mold for resin casting. I use the 3D printed pawn from this video: • Resin 3D Printers are ...
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Tools and materials used in the video:
TCP Global 2.5 Gallon Pressure Pot: amzn.to/3zipekz
Dewalt Hot Glue Gun: amzn.to/3W3U7Df
Clear Glue Sticks for Dewalt Glue Gun: amzn.to/3D4M7cq
Sorta-Clear 37 Silicone Mold Making Kit: amzn.to/3Da0EUi
Nitrile Gloves: amzn.to/3W7icsX
Silicone Stir Sticks: amzn.to/3sza9r2
Large Silicone Mat: amzn.to/3W1JDnV
Pro tip. If you plan to do a pressure pot conversion use Loctite 545 Thread Sealant! It works way better than Teflon tape!
Loctite 545 Thread Sealant: amzn.to/3zdwX3q
Disclaimer: The content presented in this video is for entertainment purposes only. The information provided is not intended to substitute or replace professional advice, and viewers should not rely solely on the information presented in this video. Viewers should always do their own research and consult with professionals in the appropriate fields before making any decisions based on the information presented. The creator of this video does not guarantee the accuracy, completeness, or usefulness of any information presented in this video.
#Moldmaking #Resincasting
This video is the next in my making a custom chess set series. You can view the previous video where I 3D printed the chess piece here: th-cam.com/video/k5A6ffQEhZY/w-d-xo.html
I just want to thank you for telling me about
how to fix the cure inhibition.. I wait a week and mold just fine. ;-)
@@jamessmallwood7448 You're welcome! Glad I could help you!
Have you made them yet?
@@getmoneygary9114 I did all the casting, but I still haven't finished the pieces. The casts didn't turn out as nice as I'd like and polishing each piece was taking so long I lost interest and they are still sitting unfinished in my garage.
@@LetsMakeAThing Thanks for the quick response, loved the first 2 videos you made. Could you estimate how much of the ANYCUBIC resin it takes to make one of those pieces? (I'm assuming you can resuse the leftover resin). I understand that regular epoxy resin for molds can be cheaper than resin for printing; but I'm wondering which method would be better & more cost effective for producing many pieces, let alone the time investment. You spoke about the downsides of 3D printing due to expenses and mess, but it seems that the post-processing with casting is quite the hassle?
Awesome
Thank you!
Hmm. You had no problems with silicone cure inhibition between your resin printed piece and the silicone?
I let the print sit for several days before I made the mold. I think it was about a week in this case. I've had success with as little as 3 days of time for the print to off gas but your mileage may vary. The longer you can let it sit the better.
Hi! How do you polish non-cylindrical 3d prints? Like a knight piece? Thanks!
The only way that I've been able to get a good finish is really slowly by hand. I've tried using a rotary tool with polishing compound on a small buff but it doesn't do the same job as the 3M Zona paper. There are probably better ways but I haven't found one yet.
i've seen a video once of a guy making a silicon mold of a diamond and the resin copy came out as shiny. How would you go about polishing parts that cannot be put on a lathe. I do a lot of bas relief stuff and it's kind of hard to sand all of the nooks and crannies to get it polished. I might try a clearcoat.
I would try a few light coats of clear coat as you suggested. Be sure to let it off gas for a few days before making the mold. There are certain chemicals that will interact with the silicone and cause it to not cure properly. Same goes with the 3D print, I don't remember what the chemical is off the top of my head, but many printer resins contain a chemical that will inhibit the curing of the silicone mold. S you need to let them sit for 3 days or longer. This is more likely to happen with a platinum silicone than a tin curing silicone. Let me know how it turns out!
Try sand polishing. Put it in a rock tumbler with polishing sand. You’ll have to clean the sand out of the nooks and crannies of the print, but that’s fine for most prints.
How does this sorta-clear stuff compare to resin from a caulking tube?
If you're referring to silicone from a caulking tube it's not the same. The stuff that comes out of a caulking tube is a sealant and is meant to stick to things. The sorta-clear mold is designed to NOT stick to things so you can remove items from the mold when it's cured. Don't try using silicone caulk it won't work and you'll have a mess to clean up.
how do you get around Cure Inhibition?
The easiest and cheapest method I have found is to let the print off-gas for about a week before making a mold. Obviously this doesn't work if you're in a hurry. There are also products made to coat a print to help with this, but I've never tested any of them.
@@jamessmallwood7448 It just means letting the print sit so any chemical reactions have time to finish. Often these reactions result in gases being given off by the part so it's often called off-gassing. At least that's what they called it back when I worked in a manufacturing environment. They may have fancy new names for it now. 🤣
@@CurtisSatterfield wow this method works? I never heard of it but thank you
@@jamessmallwood7448 It has worked for me so far. The other option is using a product like Inhibit X to paint over the part. I've never used it before so I can't speak to how well it works but if you find that letting the part sit for a week or so isn't working, or you're in a hurry then you might want to check it out.
@@LetsMakeAThing if you don't mind me asking how long do you have to let the prints off gas and what silicone will work? Thanks
P a u n