So I am finally finishing my scratch-build printer. All I have is ABS filament so I need a heated bed. The head has exactly 7x7in of print area, what glass sheet and PCB should I use for a 12v supply? I already have a thermistor from my old printhead, so I just need a PCB based heater and glass. I am done with standard glass and nichrome wire causing the glass to crack :) I would prefer amazon links with prime, the sooner the better! Thanks everyone! https://reprap.org/forum/read.php?4,610857,610857#msg-610857 Wed, 17 Jun 2026 03:38:41 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,610857,611039#msg-611039 https://reprap.org/forum/read.php?4,610857,611039#msg-611039
I have a 12" square bed with a 450W heater and it takes about 5 minutes to reach ABS print temperature.

Here's one that will definitely get you up to temp in a hurry: [www.ebay.com] It uses 110V so you'll have to be careful about wiring, but an SSR driven directly by your printer's controller will work well without a heatsink.

Here's another, a little less power, DC required: [www.ebay.com]

Glass sheet sucks- it's a thermal insulator. You need a piece of aluminum under it to spread the heat, so why not just go directly with a flat piece of aluminum instead of trying to flatten the surface with a piece of glass? Get a piece of 1/4" cast tooling plate.]]> the_digital_dentist Reprappers Sun, 17 Jan 2016 08:43:01 -0500 https://reprap.org/forum/read.php?4,610857,610870#msg-610870 https://reprap.org/forum/read.php?4,610857,610870#msg-610870 iamdarkyoshi Reprappers Sun, 17 Jan 2016 01:22:23 -0500 https://reprap.org/forum/read.php?4,610857,610867#msg-610867 https://reprap.org/forum/read.php?4,610857,610867#msg-610867
ABS needs a closed, warm (45-50C) build chamber or it will warp and delaminate.]]> the_digital_dentist Reprappers Sun, 17 Jan 2016 01:16:50 -0500 https://reprap.org/forum/read.php?4,610857,610861#msg-610861 https://reprap.org/forum/read.php?4,610857,610861#msg-610861 gmckee Reprappers Sun, 17 Jan 2016 00:44:06 -0500 https://reprap.org/forum/read.php?4,610857,610857#msg-610857 https://reprap.org/forum/read.php?4,610857,610857#msg-610857
I would prefer amazon links with prime, the sooner the better! Thanks everyone!]]> iamdarkyoshi Reprappers Sun, 17 Jan 2016 00:31:15 -0500