radial arm saw problem - Woodworking Talk - Woodworkers Forum
 
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post #1 of 7 Old 01-07-2012, 11:26 AM Thread Starter
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radial arm saw problem

Why is my Craftsman RA saw starting cuts like this?
every thing is square, even if I take something out of square same results.... I am about ready to move it out.......way out!
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post #2 of 7 Old 01-07-2012, 11:37 AM
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Could be the motor is not tight enough to the carriage. When the blade first hits and gets the load, looks like the saw deflects on initial contact. Or, some play in the bearings on the arm to the carriage need adjusting to take out any play. Make sure the blade is on properly tightened.

Try having a scrap in front of your piece so there's a load on the blade by the time it gets to the stock to be cut.






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post #3 of 7 Old 01-07-2012, 11:39 AM Thread Starter
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problem area is top side towards the fence.
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post #4 of 7 Old 01-07-2012, 12:00 PM
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Quote:
Originally Posted by GROOVY View Post
problem area is top side towards the fence.
Can you explain that a bit better?






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post #5 of 7 Old 01-07-2012, 01:45 PM Thread Starter
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Looking at picture the dished cut is on the fence side and up. I am afraid the problem may be thrust bearings in motor....
It is always on entry, I put a spacer block against fence same thing.
fairly new blade I am going to swap blade incase the set of blade is bad.
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post #6 of 7 Old 01-07-2012, 03:57 PM
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carriage side play

Roll the carriage out half way and grasp it with both left and right hands. Try to twist it horizontally and see if it has any play. If so:
The arm has guide rails 3/8" along either side on which the carriage rides on "V" groove ball bearings. The 2 on the right side are fixed, the 2 on the left side are on cams which means they are adjustable. You will have to remove the plastic side covers on the left and find top and bottom 1/2" bolts and lock nuts.
Back off the lock nut and gradually turn the bolt(s) while checking the carriage for free play and ease of sliding. You should find the right combination. The issue is that the front bolt will rotate the carriage out of sqaure to the fence if you only turn that one and vise versa. They should both be tighten evenly.... if the saw was properly squared up before. A few minutes with a framing square and trial and error will get you good to go. bill
BTW make certain the carriage rotation lock handle, on the upper right of the carriage, is in the locked position when trying to complete a cut at 90 degrees.

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 #7 of 7 Old 01-07-2012, 07:00 PM Thread Starter
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Thanks guys,
The problem turned out to be carriage related..... this particular RA has 4 roller bearings on side and 2 V rollers in center. The V rollers are on an eccentric and were too tight causing the carriage to rock. Found that when I regrouped.... cool heads and good advice. I may get this crib built by spring. pic is test pieces morticed and tenoned
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