Make your master exactly how you want your turret to look, then give it a couple of coats of fibreglass. Pull the master out and discard it. Once the master is out you have a perfect negative replica of your turret, coat the inside of the fibreglass shell with a mold release, then layup more fibreglass inside it, then demold. With this method you can make as many turrets as you want using the 1 fibreglass mold.
Chris. b On Jan 10, 9:36 am, "Doug Conn" <dwconn...@comcast.net> wrote: > Oh ! I see now. Ron, is this what you were describing, too ? Sorry, I > misunderstood. I guess it would be like this, then, where I sand away the > blue areas > > image003.jpg > 6KViewDownload > > What material is a good choice ? I don't think foam would work for > vacuforming. Even I use fiberglass, I'd like a mold that survives more than > one use. > > Thanks for the help. > > - Doug > > > > -----Original Message----- > From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] > > On Behalf Of Frank Pittelli > Sent: Friday, January 09, 2009 6:22 PM > To: rctankcombat@googlegroups.com > Subject: [TANKS] Re: turret molding question > > Doug Conn wrote: > > > I created patterns for the MDF layers by taking horizontal slices of the > > > tank turret from a 3d model. I was hoping that by having those slices the > > > right shape, there would be a lot less I'd need to eyeball when sanding. > > You can use the "bread and butter" approach: > > 1) Create each horizontal slab using the "maximum" dimension for each > > slab. In other words, each slab will extend "outside" the desired surface. > > 2) Create a paper template for each slab using the "minimum" dimension > > for each slab. The paper will represent the desired surface. > > 3) Sandwich the paper between the slabs and glue everything together. > > 4) Sand away the exposed edges of all slabs until you hit paper, making > > a smooth transition from one slab to the next. > > No artistic skill needed, just a long rasp or file used with long > > strokes and patience. > > Frank P.- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
