This is a part for a wheelchair (specifically a Quickie2). It is the locking/swing mechanism for the leg rests. Shown is the main body. Not shown is the spring-loaded locking shaft that fits in the large hole. The entire thing is about 40x50x70mm. The original part is molded plastic with metal spring and shaft. Replacements are $45 each and two are needed per chair. Because it is plastic, pieces break away easily and would need frequent replacement. But I have a CNC and a 3D printer. Because the OEM part is plastic, there are obviously no real safety issues…it is more an issue of convenience when swinging the leg supports.
I 3D printed the assembly but I fear it will suffer the same fate as the OEM plastic, molded part. I asked if the part came in metal and was told it does not. That doesn’t mean I can’t make it in aluminum, though. But it’s way too difficult for me to make on my XXL. It would require machining on three sides and registration would be way too difficult for me. So I thought of combining 3D printing with aluminum machining to make the part.
In the included pix, the part that breaks away is the lip at the left side. That fits into a complementary raceway. The raceway, by the way, is metal (who would of thought, huh?). I am thinking of making that portion of the part from aluminum (machining the slot and 1 inch diameter semicircle on the XXL) and adhering/bolting that to the rest of the part, which would be 3D printed.
I’ve done no metal work on the S03, so that would be a challenge itself. Anyone have any ideas?