Well, the 60T sprocket was new (from Surplus Center)What are the secrets for painting hard-abrased components like sprockets? Since you're doing it, it seems likely you may know something more about it than myself. What kind of prep work and materials and tools for it? What kind of primer like self-etching or flat high-temp? What kind of color coat? What kind of clear coat if any? Any sanding between coats of any of the materials?
Planning for some direct contact of metals on an unrelated project, don't want to immediately redo it for appearance's sake. Nothing I can do to defeat the intelligent morons who always eventually find a way to undo my good work for their own supposed benefit, just have to deal with it and make the work as hardy as possible.
35 PITCH ANSI ROLLER CHAIN SPROCKET ($32.15)
Brand new. ANSI standard 35 pitch roller chain sprocket. Bored to size. One-piece carbon steel forged construction with hardened teeth and black oxide finish. Two set screws. Set screws are located directly over the keyway and 90° from keyway. Keyway is on center line of tooth.
As such, not much prep work was required.
...so, I just gave 'er a good scuffin' with a piece of Scotch-brite (med)
...then, hung 'er up
...& wiped 'er down with a rag soaked with plain old Rubbing Alcohol (to collect any dust & as a cleaner/de-greaser too)
Let 'er dry for a few minutes
...& give 'er a light coat (mainly getting the edges & any "nooks & crannies"
...then, after a few minutes, give 'er a nice/heavier "gloss coat"
For this sprocket, I used some Appliance Epoxy spray paint (from Walmart) which didn't recommend primer
...it's supposed to give a "hard coat" for heavily used appliances
...so, we'll seeeeeeee how well it hold up on sprockets
As for long term use, heavy duty paint for like truck frames, hand rails, garden trellises (also, go kart rims, motor mounts & sprockets) I like Rustoleum Oil Based, brush on paint
It coats really good
...levels nicely (if applied in cool temps, the brush "lines" fade away quickly)
...& (2) coats seem to give it a really durable thickness
...but, (there's always a but) it seems to take forever to totally dry/cure (like several days)
Once it's fully dry/cured it looks really nice
...& seems ta last forever