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Forrest Blades cause more sawdust? Also laserkerf

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Forum topic by Fuzzybearz posted 02-22-2019 05:36 AM 2008 views 0 times favorited 16 replies Add to Favorites Watch
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Fuzzybearz

84 posts in 372 days


02-22-2019 05:36 AM

Hi everyone

I recently bought the Forrest 90tpi chopmaster II for my miter and the Forrest 40tpi for my table saw.

It may just be me but I swear both blades are creating more dust than before. My miter I used to almost get no dust around the machine and back, but now I’m dust collection can’t catch it all. I’ve cleared out my vacuum and such to make sure there is proper suction. Is it simply the blade chipping away a higher amount of wood to create smoother cuts?

The table saw I used to have a thin kerf and now I have a regular kerf, so I could see it throwing out more dust.

Anyone buy laserkerf? I bought one for my Bosch and It essentially covers up my dust port. Last thing I want is more dust


16 replies so far

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Rich

4157 posts in 892 days


#1 posted 02-22-2019 06:49 AM

Think about it. A cut will make waste from its width and depth regardless of the blade. The shape of the waste might vary, but the volume is fixed.

Regarding lasers, I don’t need or want one. I don’t cut to a line often, and when I do, I do it relative to a zero clearance insert or fence.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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Fred Hargis

5389 posts in 2796 days


#2 posted 02-22-2019 11:43 AM

Just a guess, and it may depend on how many teeth the miter saw had before the 90 tooth one was installed. But the guess is that the 0 tooth is making more dust just because it has more teeth (?).

-- Our village hasn't lost it's idiot, he was elected to congress.

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Redoak49

3844 posts in 2292 days


#3 posted 02-22-2019 12:00 PM

I am guessing that he is referencing the Laser Kerf blade from Infinity.

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Fuzzybearz

84 posts in 372 days


#4 posted 02-22-2019 03:56 PM

I am referencing the laser from laserkerf, not a blade.

I’m also wondering if it’s throwing more chips due to the orientation of the saw blades. Before all mine were straight up and down, Forrest blades have some angled off to the sides.

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pottz

4501 posts in 1287 days


#5 posted 02-22-2019 04:10 PM

as rich said the amount of wood being removed is based on the width x depth of cut the only difference would be how fine the particles are due to the type of teeth and how many teeth.i also dont use lasers for saws,not very accurate im my opinion.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

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Phil32

461 posts in 206 days


#6 posted 02-22-2019 06:59 PM

I think it would be good to bring in a research scientist to: 1. study (measure) particle size and distribution, compressibility of the particles, 2. relative cost of the sawdust to the solid wood, 3. other considerations to avoid actually making something out of wood.

-- Phil Allin - There are mountain climbers and people who talk about climbing mountains. The climbers have "selfies" at the summit!

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Fuzzybearz

84 posts in 372 days


#7 posted 02-22-2019 07:06 PM

I wasnt trying to avoid making anything. I’m just wondering why I feel like im getting more sawdust sprayed around ad it was something I had done. Thanks though Phil

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Phil32

461 posts in 206 days


#8 posted 02-22-2019 07:14 PM

Sorry to make a joke out of it. Carry on, Fuzzybearz

-- Phil Allin - There are mountain climbers and people who talk about climbing mountains. The climbers have "selfies" at the summit!

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TungOil

1147 posts in 798 days


#9 posted 02-23-2019 01:04 AM

Certainly you are making the same volume of dust for the same size cut. Perhaps your new blades are sharper, leading to faster cuts, which might be overwhelming your DC.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

View splintergroup's profile

splintergroup

2576 posts in 1525 days


#10 posted 02-23-2019 02:36 PM

If I was to offer a guess, I’d say one blade is producing larger bits of sawdust. Dust collection is sensitive to particle size, fine dust has different airflow requirements than coarse dust. Your DC may be on the edge of working with one size and not the other.

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knotscott

8253 posts in 3679 days


#11 posted 02-23-2019 05:06 PM

There are lots of variables in play. Kerf width and the type of top grind will have a significant impact, but so will the wood itself, cut speed, blade height (in a TS), etc.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

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pottz

4501 posts in 1287 days


#12 posted 02-23-2019 08:52 PM

id say forget about why its making more dust and figure out how to collect it better-lol.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

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LeeRoyMan

15 posts in 30 days


#13 posted 02-24-2019 05:26 AM

It’s more about the gullets on the blades. More teeth will have smaller gullets and will disperse the sawdust differently than a blade with less teeth and bigger gullets. Which size does what is hard to say because different brand blades all have different designed gullets. It’s plausable that the sawdust could

View therealSteveN's profile

therealSteveN

2234 posts in 877 days


#14 posted 02-24-2019 06:43 AM



Just a guess, and it may depend on how many teeth the miter saw had before the 90 tooth one was installed. But the guess is that the 0 tooth is making more dust just because it has more teeth (?).

- Fred Hargis

My thought too. I’m thinking most blades coming with miter saws are around the 60 tooth variety. The wood getting whacked that many more times would make a finer dust, not necessarily more dust.

-- Think safe, be safe

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Fred Hargis

5389 posts in 2796 days


#15 posted 02-24-2019 12:21 PM

My thought too. I m thinking most blades coming with miter saws are around the 60 tooth variety. The wood getting whacked that many more times would make a finer dust, not necessarily more dust.

- therealSteveN

That’s what I was thinking. The wood being removed is the same, but in more and smaller particles.

-- Our village hasn't lost it's idiot, he was elected to congress.

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