under $70. For some reason I ordered it only recently. It came in today and as usual no time was wasted as I bore it for 2 1/2 ID BBs, made a shaft for my grinder and tested it.
Bottom line: it is a steal ! Comes balanced (I checked it too), is fairly true. The rubber's hardness is just right.
As the OD is too big to fit into me 9x20, I bore it on my X3 mill.
A bonus tip for lazy machinists:
To indicate a hole of a common and accurate size, simply mount matching round into the mill's spindle, lower it and locate the hole. Clamp the spindle and clamp the work piece to the table - with the round still in the spindle, "pinning" the piece. Lock X & Y. Bore away.
Don't use this method when doing contract work for NASA, but it will do just fine to bore a contact wheel.
Bottom line: it is a steal ! Comes balanced (I checked it too), is fairly true. The rubber's hardness is just right.
As the OD is too big to fit into me 9x20, I bore it on my X3 mill.
A bonus tip for lazy machinists:
To indicate a hole of a common and accurate size, simply mount matching round into the mill's spindle, lower it and locate the hole. Clamp the spindle and clamp the work piece to the table - with the round still in the spindle, "pinning" the piece. Lock X & Y. Bore away.
Don't use this method when doing contract work for NASA, but it will do just fine to bore a contact wheel.