CTC A13 Bed Bracket / Adapter

thingiverse

I bought a cheap additional printer on eBay, and the description stated it had an aluminum heated bed. When it turned up I was surprised to find a miniature MK3 aluminum heat bed about 100mm x 100mm and 0.5mm thick Kapton tapped to the bottom of a black painted 2mm steel plate over 4 times the size, and also had variations in the surface of over 0.2mm which made it pretty much impossible to get a good first layer on a print except in about the 100mm square where the tiny little heat bed was underneath. This was not going to work as a heated bed, so I bought a new aluminum bed which is a 214mm mk3. I did not account for the fitting of the bed on the A13 which I believe is the same as the Ender 3. The fittings are 117mm centered, not 209mm centered as the mk3 I bought. So I drew up a small svg in InkScape to laser cut an adapter plate out of 3mm acrylic. The adapter then connects to the gantry on the A13, and then converts into a 209mm center spaced mounting. I have also included an STL of the adapter, so it could be printed if required, but I had no need to print it out as I could laser cut it out of acrylic, so the STL is not tested. The additional parts required for fitting to the existing gantry are: 4 x M3 8mm+ bolt 4 x M3 washer 4 x M3 lock nuts As the holes are designed for M3, and the A13 comes with M4 you will additional need: 4 x M3 35mm+ bolt 8 x M3 nuts (depending on how you want to fit the bolts on the bed, I always secure fasten the bolts so there is no lateral movement on the bed, only vertical. You can reuse the existing springs