On Sun, 17 Mar 2013 12:35:22 -0700, wrote:

On Sun, 17 Mar 2013 06:28:52 GMT, "Harold & Susan Vordos"
wrote:


wrote in message
. ..
I recently purchased a DoALL bandsaw that had been converted long ago
from a band filer. When the new guides were fitted the upper guides
were mounted upside down. These are the typical guides that are angled
at the ends and when installed make a VEE shaped assembly. The point
of the VEE should be pointing up but these guides instead have the VEE
pointing down. Because of this chips get caught in the valley of the
VEE and are dragged by the saw blade into the tiny gap between the
blade and the guide. The blade is galled because of this. Furthermore,
the guides are only 3/8" thick and the saw takes 3/4" blades. So I am
going to change guides and I don't know which guides would be the
best. I will not be using roller guides. But there are new blade
guides made from different materials available now and I would
appreciate advice on which would be best.
Thanks,
Eric

The guides in use are incorrect for the blade size. They should support
the blade back, nearly to the teeth, so profile sawing is possible.

In regards to the direction they point, that is correct. If they pointed
up, the blade would lack the required support for profile sawing, which is
DoAll's claim to fame. The solid jaws are superior to bearings, because
they lend support closer to the needed area.

If you are plagued with chip problems, the gap is not correct. Set the
clearance according to factory specs and you'll find the guides work very
well.

Harold
Thanks Harold and everyone else who replied to my request for help. I
guess that the real problem is guides that are too narrow. I knew they
were but the problem with galling must be from too large a gap and too
little surface area. I wonder if I should get new guides that are made
from ceramic?
Eric

You could do that, or simply machine a set out of O1etc and harden
them properly when you are done.

How many hours a day for how many years do you think they will last?

A bunch! And if you are using it far more than the average serious
hobbiest..you probably have the wrong saw in the first place.

Gunner

The methodology of the left has always been:

1. Lie
2. Repeat the lie as many times as possible
3. Have as many people repeat the lie as often as possible
4. Eventually, the uninformed believe the lie
5. The lie will then be made into some form oflaw
6. Then everyone must conform to the lie