Re: Bandsaw breaking glass

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Posted by Linda on March 11, 2003 at 19:17:31:

In Reply to: Re: Bandsaw breaking glass posted by Gary Dodge on March 07, 2003 at 00:35:37:

I did two things - and it's working!!!!!

Checked my guides, and the lower one was pushing hard against the blade. I backed it off and things were quite better, but still some breaking

Then - I noticed the table had a lot of give. So I braced a 2x4 under the table where the saw was and stopped the vibration.

Between the two fixes, I now can use my saw effortlessly. Thanks for the suggestions

: Linda,

: I have heard of a solid state device that can be used to vary the speed of a motor. You might try asking at Radio Shack. Don't try a dimmer switch as it can damage your motor.

: You probably should inspect your blade guides. If they are extremely worn there is a chance that they are allowing the blade to twist and making matters worse. If you still have the extra blade that came with the saw you might want to install it and see if it works better. Loss of all diamonds at the leading edge of the blade could be adding to heat buildup.

: GaryD

: : I have a cheap Diamond Tech Speedster

: : Mostly I got it because of circular designs; and I have carpal tunnel and cutting and grinding a lot puts my hand to sleep.

: : My glass is not very thin.

: : And the saw is not variable speed. I have seen the red glow, but force water to puddle to stop it. Is there an external way to slow down a saw?

: : The break is on the outer (or right hand side) and it is small chips. It seems to happen within the first 3/4 inch of any cut (straight or circular) and breaks off in 1/4 inch sections.

:
: : : Linda,

: : : What type of saw are you using and what shapes are you trying to cut?

: : : If you are trying to cut stuff that is extremely skinny it just may be beyond the tolerance of the material (glass).

: : : If you have a variable speed saw you should try cutting at a slower speed. With some glasses more than others, there is a tendency to heat up faster than the water can cool the glass. Certainly if you are seeing a red glow at the point of blade contact you need to run the saw slower.

: : : If this does not answer your questions give me more details of exactly how and when the glass breaks.

: : : GaryD

: : : : My glass band saw keeps breaking the glass. The top guide is .25 inch from glass, the water is on the blade, and it still breaks. Any hints?

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: I did two things - and it's working!!!!! : Checked my guides, and the lower one was pushing hard against the blade. I backed it off and things were quite better, but still some breaking : Then - I noticed the table had a lot of give. So I braced a 2x4 under the table where the saw was and stopped the vibration. : Between the two fixes, I now can use my saw effortlessly. Thanks for the suggestions : : Linda, : : I have heard of a solid state device that can be used to vary the speed of a motor. You might try asking at Radio Shack. Don't try a dimmer switch as it can damage your motor. : : You probably should inspect your blade guides. If they are extremely worn there is a chance that they are allowing the blade to twist and making matters worse. If you still have the extra blade that came with the saw you might want to install it and see if it works better. Loss of all diamonds at the leading edge of the blade could be adding to heat buildup. : : GaryD : : : I have a cheap Diamond Tech Speedster : : : Mostly I got it because of circular designs; and I have carpal tunnel and cutting and grinding a lot puts my hand to sleep. : : : My glass is not very thin. : : : And the saw is not variable speed. I have seen the red glow, but force water to puddle to stop it. Is there an external way to slow down a saw? : : : The break is on the outer (or right hand side) and it is small chips. It seems to happen within the first 3/4 inch of any cut (straight or circular) and breaks off in 1/4 inch sections. : : : : : : Linda, : : : : What type of saw are you using and what shapes are you trying to cut? : : : : If you are trying to cut stuff that is extremely skinny it just may be beyond the tolerance of the material (glass). : : : : If you have a variable speed saw you should try cutting at a slower speed. With some glasses more than others, there is a tendency to heat up faster than the water can cool the glass. Certainly if you are seeing a red glow at the point of blade contact you need to run the saw slower. : : : : If this does not answer your questions give me more details of exactly how and when the glass breaks. : : : : GaryD : : : : : My glass band saw keeps breaking the glass. The top guide is .25 inch from glass, the water is on the blade, and it still breaks. Any hints?

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