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Hey Guys!
A word of caution... Ours saws will shut off after the cut is over, so we can go about our business. Whoa! that's what I thought! I was cutting a 1" x 4" bar of aluminum. (i don't know the alloy number) I was using a 14 tpi, bi-metal blade at the middle speed, and almost full tension on the spring adjustment. I was cutting dry. Lucky for me, I was close by. The saw started making a different noise, and I checked on it. When the welded spot on the blade passed the stock, the different noise would occur. Next the blade started stalling and the motor made a clicking noise (the start switch would open and close). I shut the saw off. If I had not, the motor would most likely would have gone up in smoke! I started the saw up again and lubricated the blade with paraffin. I had no more stalling, even with another complete cut. Hope this helps, Leo (in pearland, home of lots of fig trees) |
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I must have not made myself clear! The problem with the Saw had nothing
to do with the Cutoff Switch. The problem was that the Blade was jamming in the Cut in the Material. The Switch, I was referring to, is in the Motor. It is a Centrifugal Switch that Capacitor Start Induction Motors have. This Switch is closed when the motor is not running, When power is applied to the motor, Electrical Current flows through the Start Winding and causes the motor to start spinning. When the running speed is obtained, the Internal Switch opens and no more Current flows through the Start Winding. (if current flows for an extended time in the start winding, the motor will overheat and be ruined) When the Blade would hang in the Material, the Motor would slow down because of the Load. When that happened, the Internal Start Switch would close, and the additional torque from the Start Winding would cause the Motor to pull the Blade through the Material. Then the Motor would come back to speed and the Switch would open until the jam occured again on the next pass of the Blade. (the clicking noise i heard was this switch, closing and opening)) The only time I have found that the Cutoff Switch did not function right and cut the Saw off at the end of the cut, is when parts of the Vise and the Blade Guides touched each other, and prevented the Frame from pressing on the Cutoff Switch. Excuse the loooong post! Leo (pearland, texas)) |
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Jim E.
When you lube with wax, how do you do it - just press it against the
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blase while its running, let it cut through it, rub it on while it's not running, ...??? I ask 'cuz I just press the tube against the blade while it's running, but if there's better ways, I'm open. Graciously, Jim Lakewood, CA All Hail Rube Goldberg! Date: Sun, 21 Jul 2002 21:22:24 -0500 (CDT) |
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Mike Percy
开云体育I let
it cut?into a block of parafin, so as to lube both sides.? Works well,
but be careful!
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Mike
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