[RCSE] Re: Fuselage Mold Making Supplies / Advise
Jack, Location for your molding supplies: http://www.acp-composites.com/ACP-CAT.HTM Their tooling epoxy is outstanding for building up the finished surface of the mold. I highly recommend it. One warning -- this is a stoichiometric epoxy mix (as opposed to a catalytic mix) -- this means you want to get the ratios of the two parts pretty close to right on or it will not set properly. This is not a problem, but it does not have the "windage" that catalytic epoxy mixtures have. Latex bladders are available from: http://www.piercanusa.com/ If you resort to using a bladder, remember that your mold will require substantially more reinforcement against the possible bursting force. It doesn't take many psi's to get you into an exciting situation. As to bubbles in your molded piece, I have molded a number of all carbon (carbon finish) pieces (including fuselages) where surface bubbles ruin the piece cosmetically. While it adds a little weight, I have resorted to precoating critical areas with laminating resin and allowing it to thicken to the point of nearly setting up before laying in the fabric. This has worked pretty well. Don -- dharban dharban's Profile: http://www.rcgroups.com/forums/member.php?u=31927 View this thread: http://www.rcgroups.com/forums/showthread.php?t=823343 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
[RCSE] Re: Fuselage Mold Making Supplies / Advise
Jack, Location for your molding supplies: http://www.acp-composites.com/ACP-CAT.HTM Their tooling epoxy is outstanding for building up the finished surface of the mold. I highly recommend it. One warning -- this is a stoichiometric epoxy mix (as opposed to a catalytic mix) -- this means you want to get the ratios of the two parts pretty close to right on or it will not set properly. This is not a problem, but it does not have the "windage" that catalytic epoxy mixtures have. Latex bladders are available from: http://www.piercanusa.com/ If you resort to using a bladder, remember that your mold will require substantially more reinforcement against the possible bursting force. It doesn't take many psi's to get you into an exciting situation. As to bubbles in your molded piece, I have molded a number of all carbon (carbon finish) pieces (including fuselages) where surface bubbles ruin the piece cosmetically. While it adds a little weight, I have resorted to precoating critical areas with laminating resin and allowing it to thicken to the point of nearly setting up before laying in the fabric. This has worked pretty well. Don -- dharban dharban's Profile: http://www.rcgroups.com/forums/member.php?u=31927 View this thread: http://www.rcgroups.com/forums/showthread.php?t=823343 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
[RCSE] Re: Fuselage Mold Making Supplies / Advise
Would laying 3/4 oz. cloth in first and allowing it to get green help? I was just thnking if I could avoid this situation with some low pressure device... saw where some stuff uses 300 psi... YOW!... I've seen some things made inside a spinning mandrel where centripital force forced the laminate against the mold, but there's a fin involved here, etc... It's hell being a dadgum perfectionist... So, how much should I buy? I am going to make a close copy of the Dragonfly fuse, a Legionair pod mold, and a Condor mold. Sorry to be a pain... Jack -- schrederman schrederman's Profile: http://www.rcgroups.com/forums/member.php?u=13218 View this thread: http://www.rcgroups.com/forums/showthread.php?t=823343 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
[RCSE] Re: Fuselage Mold Making Supplies / Advise
What do you use for a bladder? I saw some reference to a horse condom, but I didn't know if someone was joking or not. The Houston Hawk fuselages we made had lots of voids under the paint, especially along the seam. I'd like to avoid those. Jack -- schrederman schrederman's Profile: http://www.rcgroups.com/forums/member.php?u=13218 View this thread: http://www.rcgroups.com/forums/showthread.php?t=823343 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
