Aug 6, 2012, 2:20 PM - First post and request for Help
Hello, good afternoon or good day. This is my first official post and on this forum. I have been lurking here for months drooling over many of your projects. So much to look at and so very hard for me to find the information I need not that its my turn to build.
With that said I am currently working on a, shall we say scale replica of Optimus Prime. What scale? Heck, I am doing it all by eye and have no clue. If I were to guess based on DSotM images I would say that it is about 1/5th.
This is where I am at so you can see.
The issues that I have are for what follows. The foam is actually a shipping product called instapak (a firm version) cutting and shaping I can deal with but what I would like to do is cover it with something like clay and then creating a mold with fiberglass so that I can make 10 final pieces. This is why I am posting here. Can someone help me with:
- Which clay or product to cover it for glassing
- Will any Epoxy/glass work
- any other tidbits tips or tricks
As I said I tried to do a search but unfortunately the 5 pages of responces for FOAM CORE come back a little different than I need.
Again, Thanks for reading, replying and understanding my plight.
Lane AKA LaneLander
Aug 7, 2012, 1:18 PM - Re: First post and request for Help
have you considered using bondo to finish the surface ??
Aug 7, 2012, 7:40 PM - Re: First post and request for Help
1. Any oil clay will work, but you are best off avoiding anything that contains sulfur. I prefer Chavante NSP Med.
2. Epoxy/glass will work for a mother mold, but you will need a layer of silicone against the clay (daughter mold) first. It's a simple rule. Cast a hard part in a soft mold, and cast a soft part in a hard mold.
3. Do a lot more studying. Go to Smooth On's website and watch their tutorials. Tons of tutorials on You Tube as well.
Aug 10, 2012, 11:21 PM - Re: First post and request for Help
YES I HAVE was not sure how it would work on this material. The type I have used in the past was too thick. is there one that is easier to apply in thin coats?
I will have to look into this. I just hope the product is not god awful expensive.
Aug 12, 2012, 10:44 PM - Re: First post and request for Help
That looks like a Urethane foam (most likely Great Stuff), so Bondo should be okay on it.
If you want a Bondo surfacer that you can brush on, I recommend making some Rondo. It's a simple mix of fiberglass resin and bondo. Just mix the two in a cup till you have the consistency you want and then add the liquid hardener before brushing on.