Stone Arch Viaduct / Bridge - Printable Version +- (https://bigbluetrains.com) +-- Forum: The Back Shop (https://bigbluetrains.com/forumdisplay.php?fid=52) +--- Forum: Tips and Tricks (https://bigbluetrains.com/forumdisplay.php?fid=30) +--- Thread: Stone Arch Viaduct / Bridge (/showthread.php?tid=8995) |
RE: Stone Arch Viaduct / Bridge - railandsail - 09-07-2019 Casting Curved Arch Roof Pieces I asked the builder about any difficulties with casting those curved pieces? He responded, Quote:You're right, it was a bit of a problem. I had to wait until the plaster was a bit less soupy. I kept troweling it to coax it "up the hill" until completely set. RE: Stone Arch Viaduct / Bridge - railandsail - 09-07-2019 Closed Molds I subsequently ask, Please excuse my limited knowledge of 'plaster casting'. Is it possible to have a 'closed mold' to cast plaster/hydrocal?....say a double sided one into which one would pour the mix? You might be able to pour the whole arch in one shot rather then 2 halfs?? Doctorwayne suggested I have a look at a posting he had made on this forum,... Making Molds https://bigbluetrains.com/showthread.php?tid=2783 I need to spend some time looking thru this info |