MTFCA Forum

Greetings Model T brothers, What tool can I to use chamfer the transmission cams for the o-ring trick? I do not have a lathe. -- IV

I would think that a cordless drill and one of these would do the job.

https://www.homedepot.com/p/Ryobi-3-4-i ... /205469282

I use a pneumatic die grinder with the fine grit triangular shaped stone. Level the piece in a vise, take your time and test fit often. Not as precise as some machine work I've seen but it gets the job done.

Just a stone will do the job, place in your elec. grinder, or a elec. drill would work, although the drill motor will run at a much slower speed.

A stone will jump around less than a cheap conical large tooth cutter tool, unless you have the right speed and lube.
Takes a few minutes to do it. A 1" ball or 3/4" cone abrasive stone, the groove is just half or bit more of the O-ring thickness.

Thanks for the advice on depth Dan. I plan to use this stunt when I rebuild my hog's head, but I've never seen anything on depth.

This will provide all the info you could ever need regarding stretch, compression and % gland fill: https://www.marcorubber.com/o-ring-groo ... ations.htm