¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. 4x6bandsaw
  2. Messages
Single Messages Topics Expanded Polls

Re: HF sawblade?

 

Dave, just trying to decipher what you've said.
Have you got one of those old HF 'Greenie' saws with the one-piece cast alloy guide assemblies sliding on the outside of the sawframe casting, where the guide brackets carrying the rollers are not adjustable on the guide bars?
If yes, then shimming the bar off the raised tracks on the sawframe casting is a good idea.? I have also seen people?put set screws into the casting to get some adjustment.
Bit?puzzled by you?getting an 'almost?perfect' cut, if the angle of the blade-body is not square to the vice table.
The only problem with setscrews?is that they provide a point loading on the guide bars and will dent the soft alloy and more likely, twist/bend the guide bars as you tighten, unless they're right next to the clamping handwheel.? I think a strip of shim will be better at transferring?the load.? You can get shim that is made up of?leaves of 0.001" that you peel away until you get the right thickness, like this from McMasterCarr?.? Just stick it to the casting with double sided tape. The aluminium stuff is cheapest though you can get it in brass, steel and stainless too.? If your guides are aluminium there's no point in anything more expensive - jv

On Sat, Apr 17, 2021 at 5:47 PM Dave Seiter <d.seiter@...> wrote:
While I was waiting for new blades from to arrive this week, I spent some quality time with my saw and discovered that there was a lot of gunk between the blade guide bar and the slot it fits into (the one closer to the hinge end of the saw).? Cleaning it up actually straightened the blade out a bit, but only by a degree or two.? I tried inverting the blade too, but it didn't make any difference.? ?When the new blades showed up today, they still cut at an angle, so I knew it wasn't the blade.? I thought about shimming the blade guides to change the angle of the blade, but that wouldn't fix the problem, just the symptoms.? I adjusted the cams, and it cut a little straighter, but after about a minute of cutting some aluminum, the blade suddenly stopped.? One of the bearings had broken (a chunk fell out of the outer race!) and the dust caps had popped off.? Obviously way too tight.? Another set of bearings was swapped in, and then the blade wouldn't stay on the wheels.? This was going downhill fast, so I stepped back and realized that the best way to adjust the bearings was without the blade, and off the machine.? Much easier!? I only did one test cut, which was almost perfect, and left it to work on some other things.

Last week, when I checked the HF blade for squareness, it looked right on (both before and after I inverted it.).? Today when I checked the new blade, it was obviously not square, but both cut at the same angle before adjustment.? If further tweaking doesn't make it cut dead straight consistently, I'm thinking about adding set screws to channels the guide bars sit in so that the angle can be finely adjusted.

-Dave
Join [email protected] to automatically receive all group messages.