This is going to be my attempt to make a bowden extruder for 1.75 filament from scratch. The motor is one that I got from the QU-BD store that they use on their extruder. It will be geared 2.5 to 1. Let me know if you want more photos as I'm just posting some of the more interesting ones. Some of them are staged as I didn't take any when I was doing the actual operation.
First I made some gear stock. The gears I made are 32 pitch, 12 tooth and 30 tooth for the gearbox.
I then cut the gears from the gear stock.
The gears get bored and reamed.
I'm using 303 stainless bearing shaft and knurling it to hold the gear. 2 flanged bearing are added to the shaft.
I'm taking a block of alum and making the gearbox.
All that is needed to finish is to be drilled and taped for 3mm bolts.
This will be all for now. I need to get some more taps to finish the gearbox. I have some 2mm ID, 4mm OD PFA tubing that I need to figure out how to hold it and will be working on that too.
Rodney