a different bandsaw approach

[sunnybob]

just surfing the tube and came across this one

https://www.youtube.com/watch?v=FzMZt-m ... lsstarrett

This could become another sharpening debate. I notice the side bearings are in contact with the blade at all times???

 

[NazNomad]

''The blade MUST be in the centre of the wheel at all times''

Why do they assume everybody has a saw with crowned wheels?

 

[Phil Pascoe]

just surfing the tube and came across this one

https://www.youtube.com/watch?v=FzMZt-m ... lsstarrett

This could become another sharpening debate. I notice the side bearings are in contact with the blade at all times???

Why do you think that odd?

 

[sunnybob]

Because every other advice I have been given and video I have watched tells me the bearing MUST NOT touch the blade when its running free.
I didnt even get into the crowned wheel debate.
See? Told you this would open another can 'o worms.

 

[Phil Pascoe]

I'd have thought that was whole point of having bearings rather than blocks. The rear bearing still wouldn't touch.

 

[Tasky]

Because every other advice I have been given and video I have watched tells me the bearing MUST NOT touch the blade when its running free.

Stoopid noob question, but... Why's it called a bearing if it doesn't bear anything?
Most other mechanical (non-magnetic) bearings I know of actually touch/hold their borne component... otherwise it'd be a guide, or a guard, surely?

 

[NazNomad]

Stoopid noob question, but... Why's it called a bearing if it doesn't bear anything?
Most other mechanical (non-magnetic) bearings I know of actually touch/hold their borne component... otherwise it'd be a guide, or a guard, surely?

It's a ball bearing used as a blade guide. Hope that clears it up :-D

 

[Tasky]

It's a ball bearing used as a blade guide. Hope that clears it up :-D

Reading up, I'd have expected them to have rubber mini-tyres on the bearings, or something...

 

[sunnybob]

They are called bearings because that exactly what they are. On a band saw they are there to stop excessive sideways twisting of the blade, causiong the blade to jump off the wheel. If they are in constant touch with the blade the theory goes that too much frictional heat is created and the blade weld snaps.

 

[Beau]

With bearing guides as in the video do users of them have any problem with resin build up on bearing surface? I was warned away from them many years ago for this reason but never heard of anyone having problems. Seems they are the go to style these days.

 

[Tasky]

If they are in constant touch with the blade the theory goes that too much frictional heat is created and the blade weld snaps.

Theory?
I'd think the whole point of roller bearings is that they roll with the blade, precisely so you don't get loads of friction... hmm.

So this is an official video from the manufacturer?
Are they a well-regarded brand?

 

[sunnybob]

starret? Oh yes. Top dollar.

The bearings themselves dont heat, but the blade does because its the blade that is dragging the bearings around.

I set my bearings as close as, without actually touching, and yes, sawdust does build up over time on the bearing surface.

 

[Tasky]

starret? Oh yes. Top dollar.

Hmm.... I may have confused them with Startrite... :lol:

The bearings themselves dont heat, but the blade does because its the blade that is dragging the bearings around.

A quick on their webby look shows they don't seem to make the saws, but they do make the blades - Maybe these are supposed to be fancy low-friction ones......? :wink: