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post #1 of 6 Old 05-18-2011, 08:30 PM Thread Starter
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Powermatic power feeder question

I just got a like brand new Powermatic pf-3jr on a trade, my concern is I don't want to drill on any of my cast iron surfaces to mount this, can I mount it on some 3/4 birch ply and use clamps to keep it in place, or does this thing pack a punch with torque power and might just rip that from right under it? I want to use it for my table saw.

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post #2 of 6 Old 05-18-2011, 08:40 PM
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Glue some sandpaper to the plywood for grip, make it large enough so you can get three heavy duty clamps on it.
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post #3 of 6 Old 05-18-2011, 08:42 PM
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I've actually never used one of those before, Nor have I actually seen one in person. I would imagine testing it wouldn't be a bad choice, Just keep your whits about you when you test it. Be ready for something bad to happen just in case.
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post #4 of 6 Old 05-18-2011, 11:08 PM
where's my table saw?
 
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angle iron (steel)

If you mount it on a piece of angle and flush the bolt heads on the bottom or use tapped/threaded holes, you will have a vertical and a horizontal surface to clamp to the edge of the table saw. By having two opposing surfaces it won't have a tendency to slide if clamped securely.
Is the reason you have purchased this that you have a considerable amount of ripping to do rather than just occasional use? Possibly is this a "safety" issue and you want to avoid using push sticks? The variable speed units would have better feed rate control than the fixed speed ones. Post a photo of the mount when you get it set up. bill

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #5 of 6 Old 05-19-2011, 02:28 AM Thread Starter
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Quote:
Originally Posted by woodnthings View Post
If you mount it on a piece of angle and flush the bolt heads on the bottom or use tapped/threaded holes, you will have a vertical and a horizontal surface to clamp to the edge of the table saw. By having two opposing surfaces it won't have a tendency to slide if clamped securely.
Is the reason you have purchased this that you have a considerable amount of ripping to do rather than just occasional use? Possibly is this a "safety" issue and you want to avoid using push sticks? The variable speed units would have better feed rate control than the fixed speed ones. Post a photo of the mount when you get it set up. bill
Thanks for the idea on using angle iron, Actually 2 reasons, first is because whenever I am making beveled edges I try and use one consistent 8' piece where I have to add bevels to two sides of my stock, so first feed it in one direction, then turn the board around and feed it on the other side so I'm left with a cut that looks like a trapezoid. I've had problems in the past with the wood shifting slightly causing me to have to sacrifice material, and with what the cost of materials is today, mistakes can run up the cost on your projects quite drastically, and second is for safety, from what I have read, these power feeders make your job much much safer, I will still be using a riving knife like I always do to add more safety against kick back, I'll definitely post pictures once I finish some sort of clamping system for the feeder.

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post #6 of 6 Old 05-19-2011, 05:51 AM
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The mount should be an easy mount that allows the column to slip into a bracket that has a flanged bottom. Ordinarily, that flange is bolted to the machine top. If you had a second flange you could bolt/clamp it to another machine. That way you could just lift the column from one mount and slip it into another.

You can just clamp the flange to the top. No need to add any base to the flange. You might just add some type of non skid to the underside of the flange like the rubberized shelf liner that comes on a roll. If the flange has a slight taper that permits the clamp to slip, mount the flange to 3/4" plywood using recessed "tee" nuts on the bottom and 1/4-20 or 5/16-18 "tee" nuts and machine bolts. Allow enough overage on the plywood for a clamp. You can still mount the rubberized shelf liner to the bottom of the plywood to help prevent slipping and reduce any vibration.








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Last edited by cabinetman; 05-19-2011 at 06:12 AM.
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