custom D-bot bottom corner by Rexipus

Last crawled date: 3 years ago

This is a corner piece for the D-bot bottom corner vertices. It uses the parameterized corner piece here: http://www.thingiverse.com/thing:1543523
The original had 70mm of rail covered in each direction. I used I think 40mm instead. The original parameterized corner piece was monstrously large, so I trimmed it down to something more reasonable. I also made it so in each direction two screws were used instead of one in each rail slot.
The attached photos show this corner piece printed out in red eSun PETG and attached to my D-bot printer, and the remaining three photos show the original corner bracing that was put on the printer following the original D-bot plans. I was looking for a stiffer corner bracing for these corners that would also help with 90-degree alignment of the rails coming into the corner. This one-piece corner brace joins these rails into the corners with a nice tight joint that is much stiffer and stronger than the original bracing, and which enforces the 90 degree angles coming into the corner.
This file will make a brace that fits the left rear and front right corners of the D-bot. Use the mirror feature in Cura or your slicer of choice to make a mirror image of this that will fit the left front and right rear corners.
I printed this with:
.5mm nozzle
.24mm layer height
eSun PETG filament
245 C nozzle temp.
70 C bed temp
glass bed with a fairly old application of hairspray
Print speeds of 30mm/s for all walls and infill should be fine.
Update: I should mention that since these braces require that the rails slide into the holes in the brace, the exact build order that is shown in the D-bot build guide may need to be modified somewhat. I had already built my frame with the original D-bot corner braces, so after printing out these one-piece corner braces I had to partially disassemble my D-bot framework in order to retrofit it with these braces. Given how I did it after the fact I don't have a good description for the best build order. Print them out and think about it and I'm sure it'll be pretty clear how to order the construction to make this work well.