Automatic de-sawduster

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Automatic de-sawduster

Postby paul@paulkirchnerstudios.com » Fri Jun 21, 2013 11:21 am

Seems to me that a portion of the dulling of the saw blade must be due to trapped sawdust in the kerf. Pulling back the tables after a cut is often pulling back over the blade that has sawdust in the teeth.
I'm looking for a way to get rid of the dust besides doing the finger swipe that is often recommended.

This is prototype folks, just to see what works and what doesn't. And in writing this I'm thinking actually the brush should be located behind the fence rather than in front the way I have it now.

A toothbrush hot glued down to a thin sheet of ply so I can position it in place. Right now this grip clipped to the main table. I found the OEM tables to be woefully inadequate for size. They're really the right size if you're only cutting pieces of wood a few inches long.

Will report back after more testing.
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paul@paulkirchnerstudios.com
 
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Re: Automatic de-sawduster

Postby PFranks » Sat Jun 22, 2013 11:17 am

I like this idea, Paul. I was also wondering about putting the nozzle from a compressor on the tables, pointing at the blade. But the noise would be unpleasant.

How does your toothbrush work? Do you just end up sawing all the bristles off?

I really like your accessory tables. Is there any additional support under the overhang to stop them flexing?
PFranks
 
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Re: Automatic de-sawduster

Postby paul@paulkirchnerstudios.com » Sat Jun 22, 2013 7:05 pm

Initial results are promising. I ended up potting another brush behind the fence and I think that position was more efficient. The brush up front was less so. I was concerned that maybe the brush was exerting enough sideway pressure to deflect the blade but I really don't know yet. I want to make something that will allow a finer ability to place the brush more precisely.

I am using an old school wooden fence which is quite long which gives the oversize tables some increased rigidity. The rest of the table is not strengthened (yet).
paul@paulkirchnerstudios.com
 
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