Voila, deep skinny mortise in the plastic. If you can cut the block right by the groove, then machine the 'recess' in one piece (router and chisel should be able to make pretty quick and precise work of it, just like making a hinge mortise) and then put the two pieces back together. We have a great online selection at the lowest prices with Fast & Free shipping on many items Skip to main content. Still going to be tough to do, as ANY cutting tool 1/16' wide and 1.5' long WILL tend to wobble/drift all over the place. Get the best deals for vintage mills slot machines at. Hey, maybe that could work! Just like 'hand-cutting' a mortise often involves DRILLING out most of the waste before finessing the work with a chisel (or just using a mortising machine which combines the drill-and-chisel into one step, at least for 'common' sizes). Maybe have to use a shop-built tool, ala a really-really skinny chisel (think hand-cutting a mortise with a chisel). Maybe something along the lines of 'scratching' the groove out, like an engraving tool? Pull-stroke most of the groove and then finesse the squared-off ends of the groove. Just for your own use and 'close-enough' is good enough? Still a tough call.

Metal-working, machine-shop, precision machine/instrument type of precision? Then I'd probably say something like ablative excimer laser machining. How much 'precision' are you needing here? Hmmm, 2' thick piece of polypropylene plastic, 1/2' long blind cut, 1.5' deep, 1/16' wide?

Mills roto slot slot machine for sale