Post mount brake caliper holder (bicycle)
Description
**Update 4/22/2019:** [Seth's Bike Hacks](https://www.youtube.com/channel/UCu8YylsPiu9XfaQC74Hr_Gw) is a fantastic youtube channel that if you aren't following, you should. Seth recently posted [another hacks video](https://www.youtube.com/watch?v=n1-hqwaL4-I&t=6m22s) where he shows that you can use valve stem nuts from Presta valves to accomplish the same as this thing. If you're like me, you've got a hundred or so of those little nuts lying around, so that might be a better option. When I'm working on a bike with disc brakes, I often have to pull the brake caliper off of the frame or fork, and I usually try to leave the caliper mounting screws and any spacers or washers in place so I don't lose them. Previously, I've just used one of my existing spacers, like the 203mm rotor spacer you can see in the second photo, but not everyone has one of those handy, so here's a simple tool whose only purpose is to capture the caliper mounting screws to keep spacers and washers from falling out and getting lost while the maintenance is being done. To use it, have it handy when you're going to take off the brake caliper. As you unscrew the brake caliper from the frame or fork, you can then reinstall it on this holder. You could tighten it down, but that serves no real purpose - all you need to do is get a thread or two engaged so it holds the screws in place. I've included provision for an [8x3mm rare earth magnet](https://www.amazon.com/gp/product/B07B3SDRCP/) in the back, so you can stick it to a work stand or toolbox to keep it handy.(The 8x3 magnets were purchased to make an extruder spinner for my Prusa printer, and since you get 100 when you only need 1 or 2, I've been using those in my designs. They do work well, though) I also added a 1/4" hole in case you (like me) love keeping tools on pegboard. _If_ you don't want a version with the pegboard hole, I've provided an STL without the hole as well. Thanks to Peter Verdone for the [reference material](http://www.peterverdone.com/wiki/index.php?title=Shimano_Framebuilder_Info) on his wiki.
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