Reply to thread

Message: <blockquote data-quote="drcrash" data-source="post: 104182" data-attributes="member: 1623">For short run stuff, or an intermediate mold I wouldn't form directly over more than a few times, I might use something like water putty or gypsum cement, with drywall tape reinforcement.For something really durable, I'd probably go with a resin impression coat, and lay up some fiberglass of some sort under that.  Maybe just a healthy layer of Bondo-Glass.  (Which is not like regular Bondo.  It's not easy to sand, and it's much stronger, because it's filled with glass fibers instead of little microbubbles.)If I still wanted to be able to sand and modify it easily, at the expense of making it somewhat less durable, I might start with a layer of regular Bondo.  Then, deeper than I'd ever want to sand away, a healthy layer of Bondo-Glass for overall strength.BTW, don't trust me on this.  This resin/glass stuff is all still on my to-do list, not something I've actually done.  (Today I'm experimenting with hot wire cutters for the foam part...  I'll get there eventually.)  I have done plaster waste molds and reinforced water putty casts, but not fiberglass.Paul</blockquote>

This thread is more than 14 years old.

Your message may be considered spam for the following reasons:

This thread hasn't been active in some time. A new post in this thread might not contribute constructively to this discussion after so long.

If you wish to reply despite these issues, check the box below before replying.
Be aware that malicious compliance may result in more severe penalties.

I am aware that replying to this thread may be considered spam, but I still want to make a reply.

Verification