Can you use 50mm (1.968¡±) wide instead of 2¡±? If so, you could get two of the Hammer rebate cutters #500-04-003 and stick them on a 30mm shaft with spacers between. As for hp, they are aluminum, says they weigh 4.6lbs, I would suspect 3hp should handle it without much trouble, especially with the insert cutters that are staggered like these.
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On Jan 28, 2021, at 7:03 PM, TMichael WARD via <
tmikko@...> wrote:
Hi, I need to build a single purpose tool to cut two grooves about 3/32 deep, 2" wide, and 7-3/4" apart at the inside (for RR ties in a 2-1/2" scale model RR club). ?I'm thinking of using stacked dados on a long shaft with a 7-3/4" spacer. mount with pillow blocks?add pully and motor, ?Bolt to underside of a formica table with holes in it, then slide the plastic ties, say 20 in a frame or sled, over the two blades protruding through the table. ?Sorry, sounds complicated.
My question is, if I go with 8" dados, I need 4 or 5 sets at 5 lbs each maybe 21 lbs. ?What horsepower would it take to start that stack. Needs to go about 3450 RPM.
Or, I could use 6" dados at 5000 RPM, only about 6 lbs.
Thanks, Mike Ward
