I BUILT A HEATED BED AND IT BLEW A FUSE - GIANT 3D PRINTER BUILD PT. 3

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I'm building a giant 3D printer from scratch, the printer will have a print volume of 1000x1000x1420 mm. Everything you see in the video has been designed and 3D printed by me and the files will be available on my website www.ivanmiranda.com when the project is finished. 

I'll be using a Slice Engineering magnum plus hotend and It is controlled by a Duet3 MBHC which is a fantastic controller, check it out!:
https://www.duet3d.com/products

In this episode I install 4 - 1Kw heaters on a 3mm aluminium plate. The heaters are individually controlled by the Duet3 through 4 SSR and each heated bed has an independent thermal fuse just in case things go haywire. 
On top I used a regular piece of 5mm glass. That will be more than enough for PLA or similar plastics.

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CHAPTERS
00:00 The plate
01:07 Half wave rectifier
02:06 Thermal fuse
03:48 Sticking to the plate
06:57 Wiring
08:24 Fail 1 - Short
08:48 Fail 2 - Common ground
09:11 Fail 3 - SSR Triac
10:33 The glass
11:48 Speed test