A base plate for 630pin breadboards. Fit is very tight. Pockets are a little deep because I've left a little bit space under the rails and made cutouts between them. If you guys wanna solder and connect each rail together there is a way. I've left 2 long pockets either side of the print so I can have spares or a temporary storage for the stuff I'm working with.

I've printed this one in no-name ABS, I keep my printer outside and since it is cold I've printed it with 10mm brim with no gap to object. I've used 3 walls, 25% gyroid infill (not recommended) and enabled supports for cutouts but it is not necessary. Print is on the heavy side, costing ~125gr of material, but it is sturdy and I think it will last a long time.

Instructions

• Cut the tabs of off the pieces vertically, that way they come out much cleaner.
• File or sand all corners and break sharp edges. 
• Insert power rails first. Insert one end half way in, hold the piece in the middle and bend the other side in, finally push it all the way down.
• Insert the other pieces same way. 
• Enjoy.