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Thread: I Love the Holidays!!
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27th April 2011, 09:56 PM #1
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I Love the Holidays!!
Finally got a chance to go and pick up some logs. I scored a Blue Gum and Sally Wattle. Fired up the Bandmill with a new Blade and let the dust fly. On the first couple of cuts there was a large amount of Sawdust left in the Cut ( Sally wattle Slab.jpg). This appeared to get less the more I milled. Maybe Nifty or Bushmiller can shed some light on this! Hopefully Next weekend I can cut up the rest of the Bluegum, anyway enjoy the snaps.
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27th April 2011, 11:55 PM #2
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In my experience as little as that is, sawdust left behind is usually indicative of the gullet not big enuff to carry all the dust away, too wide a cut for the tpi (too many teeth) and/or too fast a feed rate.
Pete
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28th April 2011, 09:00 AM #3
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Pete,
It happens on Narrow cuts as well as wide cuts so I think the width of cut is not an issue, I am running a 1 TPI Blade, It could be gullet depth as I have some old Video of a Laidlaw Mill where they talk about Gullet depth. On the next Sharpen I will deepen the gullet a bit and see how I go. Thanks for the advice.
Cheers,
Jon
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28th April 2011, 07:39 PM #4
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Just thinking
, I wonder whether green timber will make the situation worse, the sawdust might tend to be more fluffy for want of a better description?
Pete
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28th April 2011, 07:51 PM #5
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Jon
Originally Posted by newjon
The short answer is that the sawdust is not being removed by the blade. It is an inherent problem with a horizintal bandsaw. This doesn't happen, I believe, with vertical bandsaws.
As long as it not causing the blade to wave, I would not worry unduly. If the blade waves it means the sawdust is causing heat build up and you will have to take some corrective action.
Water will have atendency to make the sawdust stick, but the water is a neccessary evil. There is a balance there somewhere.
By all means try deepening the gullet, but be careful to only take from the bottom of the gullet and not the face of the tooth (in a significant quantity that is. Just kiss the face with the profiler). If you start to take off too much from the face, you increase the hook angle.
Just something to observe carefully.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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