tag:blogger.com,1999:blog-8471106642347408850.post7030440530941141560..comments2023-02-21T08:11:32.219-07:00Comments on RepRap Ideas: Drywall insulated extruder Ideageo01005http://www.blogger.com/profile/05207244129346213313noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8471106642347408850.post-19255192404490117102008-12-25T17:51:00.000-07:002008-12-25T17:51:00.000-07:00Hi.For my lashup ( http://cncfdm.blogspot.com) I u...Hi.<BR/><BR/>For my lashup ( http://cncfdm.blogspot.com) I used drywall ( and later concrete backer board, which was stiffer and thinner ) as an insulator.<BR/><BR/>It worked great-- as an insulator. But, as a mechanical material it was not very good-- it tends to crumble around fasteners and such.<BR/><BR/>I have gotten a lot of prototyping done with a version using cement board, which was then coated with a thin later of fireplace cement. But, it crumbles over time, which was disappointing.Davehttps://www.blogger.com/profile/11987514110079695313noreply@blogger.comtag:blogger.com,1999:blog-8471106642347408850.post-716013202066698802008-12-25T13:10:00.000-07:002008-12-25T13:10:00.000-07:00A very nice design. Would really like to see a pro...A very nice design. Would really like to see a prototype. I hadn't thought of the drywall as insulation but it would work very well. I once built a curing oven for cooking carbon fiber trusses and we used drywall for that...the whole contraption had to get up to like 400 F. I also figure that the problem is the tolerancing between the filament and the bore of the heater. However, I don't think larger filaments will work as the excess would just be scrapped off and left outside the heater barrel...resulting in something like mushrooming.<BR/><BR/>Good work though.<BR/><BR/>DementedDemented Chihuahuahttps://www.blogger.com/profile/01715419261430119998noreply@blogger.com