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CM 72 manual7/11
I recently purchased a used CM 72 slot mortiser. I bought it from the original owner who bought it in the early 80's.
I am having a hard time finding a lot of info on it. I am looking for an owner's manual or at least a maintenance schedule.
Any ideas on where to go? The company website seems to only offer a phone number.
The Bini website lists several US distributors under the "worldwide" rubric. They may be able to supply a manual. In any case, these are simple machines. Just keep the ways lubricated and the gibs adjusted and the drive belt intact. It will outlast you.
In terms of operation, use the shortest bits that will do the job, keep them sharp and don't force them. Standard two or four flute metalworking end mills are cheap and effective. Index with a centerline on an auxiiary wooden fence.
Thank you for the good feedback. I will check out the distributors.
I am glad to hear that maintenance is pretty straight forward.
I the short time I have had it I am learning that you can do a fair amount with it. I needed to cut a stopped dado in drawer sides and clamped a backer board to the table that allowed me to slide the drawer sides between the backer and the fence. Taking several passes was easy.
What a great machine!
I am trying to picture what you mean with indexing on an axillary fence. Do you mean a flat surface with a fence attached to the metal table?
On my machine I tapped two holes in the edge of the table facing the chuck. I fasten a 1/4" thick wood plate flush with the top of the workpiece. Horizontal slots in the plate allow accurate adjustment of a pencil mark on its top edge centered on the mortise width. You can achieve the same result with a thicker fence clamped to the table with visegrip clamps, but the workpiece will be farther from the chuck, inviting more bit vibration. Minimizing the bit overhang is key to accurate slotting, especially with deeper mortises.