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6 comments
Thank you all for your help. Sorry for not replying sooner, I had subbed to this thread, but didn't receive any notifications.
Mark1a. That's good idea.
OnYerBike. I have a similar one by another brand.
Sriracha. I'll try that.
Contact r3pro themselves https://www.r3pro.co.uk/ appears to be run by somebody called Phil who makes a multitude of stuff using 3D printing, ideal for low volume. They sell a lot of other disc brake caliper/piston accessories so they may be open to a Shimano piston block.
Perusing his site, he does makes an interesting loft ladder hook and key.
Something like this? https://www.parktool.com/product/hydraulic-brake-piston-press-pp-1-2
Apparently not:
That would be for shoving them both back fully home when fitting new pads. I think the OP wants to hold one back whilst allowing the other to push outwards for cleaning. I'd try using a lolly stick, or micky something up in wood or plastic.