Bondtech BMG mount plate mounts to 20x20 V-Slot

thingiverse

This is a mount to attach a Bondtech BMG extruder to the side of 20x20mm V-slot rail. It fits any 20mm V-Slot rail actually. The axis of filament flowing through the extruder will be 90 degrees from the direction of the v-slot rail. Check out the pics. On my printer, I've attached this mount to a horizontal v-slot rail in order to have the filament extrude upward through a bowden tube. You may need to rotate the object in order to print it flat on the base, with the part that mounts to the v-slot rail sticking straight up, thanks to my unfortunate choice of object planes in Solidworks. My apologies are due. This mount fits between the BMG extruder body and the stepper motor that drives it. See a photo for reference. Note: I designed and built this to fit a BMG *clone* that I bought, not a genuine Bondtech extruder. I'm assuming that it will fit a genuine Bondtech BMG exactly the same, but your mileage may vary. The BMG clone came with three 35mm screws for mounting the stepper, which was just long enough for the extruder without an adaptor plate in between. I used 40mm screws and made this adaptor 5mm thick. The screw holes will probably have to be chased out a little with a 3mm or 3.5mm drill bit in order to fit easily between the extruder and stepper while passing the screws through it. I printed this with PETG using the following settings, but I don't consider the filament type to be important; use something appropriate and with which you have experience. Anyone knowledgeable enough in 3D printing undoubtedly has the experience to figure out their own settings, but for completeness' sake, here are mine: Filament: PETG Nozzle: .4mm Nozzle temp: 260 C Bed temp: 60 C Speeds: my max speed was 60mm/s Walls: 2 perimeters Infill: 20% Top/Bottom layers: 5/5 I sharpened the angles of the part that fits down into the v-slot groove with a knife before installing on my printer, and it installed easily and quickly, and the extruder is performing very nicely. Edit August 12, 2019: I discovered another v-slot Bondtech BMG mount created by _AlwaysLearning after someone added my mount to a collection. His mount replaces half of the BMG case and mounts to the side of a v-slot rail in order to get that vertical filament orientation. My mount attaches to the top of the v-slot rail, and the extruder and stepper run parallel to the rail, so it will work fine with 20mm rail no matter how tall it is.