Core XY PartsNot wanting to pay almost $30 for a single GT2 geared idler pulley, I did what everyone else seems to do and turned to ebay for my first collection of pulleys and belts: I'm eventually going to want a big old bed heater on this thing, and even with a smoothieboard, the connectors and traces will be happier with less current. So, since I also want to upgrade my existing solidoodle heater, I went ahead and ordered a couple of SSR kits.
As a better solution than the wrong SSR, I realized the problem with the smoothieboard driving the big bed heater was with the connectors and board traces, not the MOSFET, so why not just get a nice MOSFET and build an external heat bed driver circuit with heavy duty wires and maybe a heat sync?
And sooner rather than later, I'm going to want to actually watch motors driving belts around, so I ordered a smoothieboard and some nema 17 motors.
Some things I'm not planning to 3D print, so I needed to get a few things from the openbuilds part store for my initial experiments, and I ordered some longer (and smoother :-) pieces of v-slot than I can print while I was at it.
I turned to amazon to try and find some brass M3 washers to turn into spacers (if I can drill bigger holes in them), and got a bunch of other stuff while I was there. A batch of switches to use to notice home position on the printer. A new power supply (I once thought I'd share the other one with the solidoodle, but switching it around is a pain), and I seem to keep running out of the really short M3 screws, so I got a box of them. I finally found a washer-like object that should work as a spacer between my pulleys without my needing to drill any holes. (I have no idea what guide lifters or lifter pins are, but I know what shape I want for my spacers :-).
After getting back to work on this project, it seems like I never bought the lead screws for the double Z axis I'm planning, so go ahead and order them:
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