Recommended filament for this print

Product references matched to the published material guidance. Confirm diameter, heat resistance, colour, and printer compatibility.

Referenced item	What to verify	Price & availability
PETG filamentAmazon · Affiliate link	Amazon product page for 1.75 mm PETG; confirm colour, spool size, print temperature, seller, and delivery region.	Check price at Amazon
ABS filamentAmazon · Affiliate link	Amazon product page for 1.75 mm ABS; use an enclosure and suitable ventilation, and verify temperature requirements and seller.	Check price at Amazon

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Tools & Jigs

40mm piston dust seal fitting tool for Honda brake callipers

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License & use

CC BY

Commercial use allowed

Attribution required

Safety/IP review

The file license permits commercial reuse, subject to any applicable attribution or share-alike terms. License status does not verify vehicle fitment, OEM rights, design patents, or safety.

Shared by

Martin Sneezy (Sneezy3D)

Description

I found a tip online about using a simple thin collar to help fitting the brake piston through the new rubber dust seal when rebuilding brake callipers, which can be a PITA with some rubber seals being very tight. I made a 3D printed one with ABS filament, as my first cardboard attempt failed to be strong enough. This size is to suit Honda S2000 13CLP15S calliper piston diameter (aprox 40.4mm). Even though it's a very very simple 'design' it saves a lot of frustration fitting the piston through the dust seal without damaging the new seal so it's shared here. So this allows you to fit the dust seal and check visually to see it's fully seated inside the calliper groove then easily slide the piston through it, and then remove the collar... Could be resized to suit any piston diameter I guess.