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HP needed for heavy cutter?

 

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So how wide is this assembly going to be. 4 or 5 sets mean 4 to 5 feet mib width, if grooves are on the edges of the board.

Can you really do that w/o and support in the middle?

If you can live with less width a moulder like woodmaster (assuming material is not too tall) should work with self feeding. You can buy them used and resell them after you are done.

Bit safer with cutters enclosed. Dust collection is not great but that can be immensely improved for a dedicated setup.

Just a thought.

Imran?

On Jan 28, 2021, at 9:03 PM, TMichael WARD via groups.io <tmikko@...> wrote:

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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
 

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Mount urethane feeder wheels on spindles above the cutters to maintain down pressure as you cut. Rig up a sled with pneumatic cylinders to push the slats thru.?

You might want to find someone with a CNC router with a vacuum table, load the whole table and slot the slats with a 2” cutter to depth. You don’t say actual size of the slats, but you might be able to load 75 to 100 parts at a time on the full table.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 28, 2021, at 7:16 PM, TMichael WARD via <tmikko@...> wrote:

Forgot to add some details. The spacing needs to be precise between the grooves, and we need to make 18,000 (thousand) of these, hence the dedicated machine.

 

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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.



Brian Lamb
blamb11@...
www.lambtoolworks.com




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
 

Forgot to add some details. The spacing needs to be precise between the grooves, and we need to make 18,000 (thousand) of these, hence the dedicated machine.
 

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

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