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Post by ts656577 on Jun 14, 2016 7:48:12 GMT -5
Hey y'all. My buddy has a 3D printer and he made a for me which I will use for making a lure. He also used high-build primer to help cover up some of the layering lines. I didnt think much of it when I was making the mold (using Vac-50). I put 3 coats of UMR on both sides of the frog, added the vent holes, etc. Waited 3 hrs for each half to be cured, then went to separate them. Part of the primer has stuck to the mold and the 3D printed part has separated. Thats not a big deal, we've been working on some different iterations so losing the original isn't a big deal. However, I'm having issues getting whats left of the original out. Does anyone have any suggestions for removing what's left and the primer left on the mold? I appreciate any and all help!
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Post by mike on Jun 14, 2016 13:59:09 GMT -5
I would try to heat the mold up to 200-250 degrees F as we know the Vac 50 will take that heat with no problem. Hopefully the primer will not and you will be able to remove it. Might come off like tar (might be gooey) but it should come off. Don't recommend using anything metal to scrape it off as it will scratch or mar your mold surface. A popsicle stick or tongue depressor might work better. I'd start at 200 and then go to 250 only if necessary. I'd also recommend using a dedicated toaster oven or an oven other than your kitchen oven as I'm not sure what type of fume might come off the primer.
You can also use a little rubbing alcohol or other mild solvent that might get to the primer and not the Vac.
Hope one of those work for you. Please post a pic of your frog on MakeLure's gallery ... would love to see it.
thx,
Mike
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Post by ts656577 on Jun 22, 2016 21:32:21 GMT -5
I would try to heat the mold up to 200-250 degrees F as we know the Vac 50 will take that heat with no problem. Hopefully the primer will not and you will be able to remove it. Might come off like tar (might be gooey) but it should come off. Don't recommend using anything metal to scrape it off as it will scratch or mar your mold surface. A popsicle stick or tongue depressor might work better. I'd start at 200 and then go to 250 only if necessary. I'd also recommend using a dedicated toaster oven or an oven other than your kitchen oven as I'm not sure what type of fume might come off the primer. You can also use a little rubbing alcohol or other mild solvent that might get to the primer and not the Vac. Hope one of those work for you. Please post a pic of your frog on MakeLure's gallery ... would love to see it. thx, Mike I think the mold is a lost cause. I can't get the feet out for the life of me. Should I have applied some sort of acrylic clear coat or something? Maybe tried an additional mold release such as vaseline or mineral oil? |
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Post by mike on Jun 27, 2016 12:39:09 GMT -5
Any porosity in the original will create havoc in demolding. Especially with the a rigid system like the Vac 50. Any physical wax or Vaseline will help seal the porosity up and should help prevent it from locking up. When making a rigid mold off of a rigid original ... there is simply no give or flexibility and will no room for any error.
You might also want to try to demold the original as soon as you know the Vac 50 is firm enough to retain its shape but maybe not up to full hardness when it is considered a little "soft" still. This might give you enough "play" to get the original out before it locks on to the original as well.
Mike
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Post by ts656577 on Jun 29, 2016 14:57:18 GMT -5
Any porosity in the original will create havoc in demolding. Especially with the a rigid system like the Vac 50. Any physical wax or Vaseline will help seal the porosity up and should help prevent it from locking up. When making a rigid mold off of a rigid original ... there is simply no give or flexibility and will no room for any error. You might also want to try to demold the original as soon as you know the Vac 50 is firm enough to retain its shape but maybe not up to full hardness when it is considered a little "soft" still. This might give you enough "play" to get the original out before it locks on to the original as well. Mike Hmm yes, fantastic idea Mike. As soon as i get my next revision in from my buddy, I'll try this out |
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