Re: Hellboy Costume - Getting ready to make the first cast! - pg 4
So today was the day. I've officially cast my first mask.
Here's what transpired:
I began by adding a brace to the top of the vacuum chamber. Since there wasn't enough room with the clamps to add a thicker top, I instead chose to bold a piece of angle iron across the top. That did the trick.
Next it was on to prepping the mold. I sprayed the core with mold release, then assembled it all. I built a box to hold the mold upside down.
Next, I mixed my silicone and added color. As you can tell by the color, I ran out. So that means when I demold, I'll be painting. Not a huge deal, but still frustrating. This won't happen in the future. The vacuum chamber worked like a charm!
Then it was time to cast. I filled up the injection gun, and promptly spilled a bunch on the floor. Need to come up with a better way to fill it. I mixed way too much silicone. It was frustrating to see about $50 worth of silicone left in the bucket and on the floor.
After it was full, I put the top on and began to squeeze it out of the gun...only to find it was so thick it didn't want to squeeze. After about 20 minutes of frustration, I managed to get most of it out of the gun. My vent holes worked perfectly.
The injection gun will be a loss, sadly. I doubt I'll be able to get all the silicone out of it. But as it was only $20 to build, I will just plan to build a gun for each mask I cast.
So here's what I learned:
1. Have extra of everything you think you'll need on hand.
2. Build a better way of holding the injection gun.
3. Make the right amount of silicone next time.
4. One tube of acrylic will not color the silicone. Expect to use a lot more.
5. Have 2 rolls of paper towels ready.
6. Don't take off your gloves to get a better grip on the injection gun.
Tomorrow I will demold, and see what I've got!