bending blades with tensioner

[widget]

Hello,
First off I am very new to the scoll saw and i dont have an owners manuel for the saw I bought because i bought it used it is a delta 16" and it says the model number is 40-560 type 2
now here is my Question,i put the bottom blade in and then move to the top ,i clamp the top down and the blade looks good but when i throw the tension lever the top of the blade bends backwards and after about 5 minutes it breaks at the bend .
now im sure i am doing something wrong but i dont know what if anyone can hlp it would be greatly appreciated!!

[tgiro]

Welcome aboard;

I don't have a Delta so I'm not sure about your specific saw. I have seen blade clamps that bend the blade a little bit when you tighten the screw and then when you apply tension it can break the blade.

Be sure that the ends of the screws, used to tighten the blade in the clamp, don't have burr's at the ends. If you take the screw out and run it across some 220 or 320 grit sandpaper, you can clean those up.

Also be sure the screws are centering the blade in the clamp and it is at a 90 degree angle to the table.

There is a fellow, named Rick Hutchinson who has a lot of scroll saws. I didn't see your Delta saw on his web page, but he may have some info about it. His webpage is: Rick's Scrollsaw.

Good luck - hope you can get it working and start making sawdust.

[widget]

I will take a picture tomorrow morning so you can see what is hapening ..i dont think i explained it very well

[Rolf]

It has the quick clamp on top right? Make sure the top clamp is not binding it should pivot freely front to back.

[louhodson]

You can go to deltamachinery.com then to service and support. Enter your model # 40-560, and you should get a current price and parts price list. To the right should be a couple pdf's in red, a parts list and instruction manual that you can download to help understand the workings of your saw. Most manufacturers offer a service like this for free to help keep people happy with their products.
Try this shortcut Detail . If it doesn't work then the longhand method should get you there.
Good Luck, Lou

[widget]

yes it does have the quick clamp on it and i think i found my problem , thank you Tgiro for posting that site ,obviously people have had this problem a lot because he described it and told how to fix it ...thank you

[Rolf]

Well what was the problem?

[widget]

the bolt between the top jaws was bent a little bit ....havent broken a blade since i replaced that bolt ...was going thru about 4 in a half hour...sorry i should have stated the fix

[widget]

thanks Lou for the fantastic site ..i was wanting a parts breakdown for my saw ..I really appreciate that!