Posted by Jon Gibbs on 31/05/2018 11:11:41:
… but have had all sorts of trouble with bimetal blades – they seem to be much stiffer and stress the weld in the tight twists – eventually breaking before the teeth are close to being worn.
…
Jon
Me too, but I was able to fix it.
Of all the Chinese gear I've bought, the bandsaw was by far the roughest. It came with a Carbon Blade that only lasted a few months, but at least the blade wore out without breaking. I replaced it with an expensive bimetal blade that snapped across the weld after about a month. However, whilst fitting the new blade, I'd noticed quite a few minor problems with the bandsaw:
- The blade wasn't running quite true through the rollers.
- It was impossible to adjust the blade tension properly because the cast body of the saw fouled the adjuster. Not by much, 10 minutes with a file fixed it before fitting the second blade.
- After fitting the second blade, suspicions aroused, I first made certain the blade was true before listening carefully to the blade running off load. I heard a tiny periodic click traced to a slight ridge on the motor end drive wheel, again a casting problem. This too was easily fixed with less than 60 seconds filing.
I think the first bimetallic blade broke because the weld was stressed by the combination of over-tensioning, slight twist, and bumping over a ridge. Since applying the fixes the second blade appears to be immortal. It's still cutting well after nearly 5 years. For reasons of laziness I usually run the saw at it's lowest speed, which probably helps too.
Despite the problems and obvious shortcomings, this cheap bandsaw is by far the most appreciated tool in my workshop. It cuts straighter than I do while saving huge amounts of time and much hard labour!
Might be worth giving yours a critical inspection, quite likely it would benefit from a little fettling.
Dave