Thanks for the souce John. I had been looking for a new one to replace a lost gear puller.
Pullers for faucets work sometimes....barely.
You can make one, but will it be and pull true? (square, plumb). Some are just plain too cheap and bend before pulling.
A battery terminal puller might work. So might a chain tool, or small gear puller (there are many worthy pullers in the machinists catalogs). Pro- HVAC & plumbing supply shops are a good source for an assorrment too.
It's all about how well it grabs the wheel; and usually jaw thicknesses and angles hold you back; so look to high grades on gear pullers.
A C-brace type puller that supports under the wheel/geat is the best if you have room to use it. Any flaws in metallurgy and the wheel stands a better chance of survival than if using a jaw puller that only grabs flanges. (I have three chipped drivers on Marx, 1 Lionel right now) The downside is you can't always fit the C-brace where you need it.
Thats where one like Timco's is nice. It's sort of an in-between. Wide, thin, catch shelves on hard steel bolts. Looks like a winner.