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Ends of board burning when I cut them? Solution?

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Forum topic by Micahm posted 296 days ago 611 views 0 times favorited 9 replies Add to Favorites Watch
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Micahm

135 posts in 359 days


296 days ago

I am working on a project and when I make a cut with my circular saw the plywood burns on the ends where I cut. I am using my new DeWalt 15 amp worm-drive circular saw with a Freud Diablo Ultra finish Blade. Both the saw and the blade are brand new out of the box the same day I cut the wood. I am cutting 3/4 inch Red Oak plywood, so I know the 15 amp saw is not going to be under powered for the job. Could it be the the Ultra finish blade with the 60 teeth doing the burning, or would that not matter? Am I going to slow? If I go faster than the speed I was going, if feels like I am forcing it. Perhaps my blade needs straightening? I just don’t know, any tips or suggestions would be helpful. Thanks!

-- The things I make may be for others, but how I make them is for me. - Tony Konovaloff


9 replies so far

View Loren's profile (online now)

Loren

7398 posts in 2274 days


#1 posted 296 days ago

How far out do you have the blade protruding below
the saw base plate?

-- http://lawoodworking.com

View Tedstor's profile

Tedstor

1369 posts in 1259 days


#2 posted 296 days ago

Feed rate too slow?
Are you using a straight edge? Maybe you’re feeding the saw into the wood at a crooked angle- thus the blade is becoming slightly binded?
60 teeth does seem excessive on a 7.25” blade- for plywood. But I’d think it’d still work OK. Especially if it were new.

View UncannyValleyWoods's profile

UncannyValleyWoods

335 posts in 490 days


#3 posted 296 days ago

You’re going to have to make a sacrificial offering to your saw. Follow these steps.

1. Build a bond fire.
2. Put seven pieces of Ikea furniture onto the bond fire.
3. Pour seven beers on the ground.

This should pacify your saw.

-- http://www.etsy.com/shop/UncannyValleyWoods

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chrisstef

10653 posts in 1633 days


#4 posted 296 days ago

Not the beer! ^

Ok maybe 7 Michelob Ultras but no real beer please.

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

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ScottKaye

275 posts in 580 days


#5 posted 296 days ago

Micahm,

Check your fence alignment to your blade. I bet is not parallel. I had this same issue with a POS Craftsman.

-- "Nothing happens until you build it"

View dschlic1's profile

dschlic1

161 posts in 596 days


#6 posted 296 days ago

I second the issue of blade alignment. When I purchased my circular saw, the blade was over 1/8” out of alignment with the edge of the base. It took me the better part of a day to get it lined up. I use a Diablo fine blade and have no issues with burning.

View moke's profile

moke

475 posts in 1403 days


#7 posted 296 days ago

Uncanney—-correct me if I’m wrong, but don’t you have to wear two pair of yellow socks too?
Mike

View UncannyValleyWoods's profile

UncannyValleyWoods

335 posts in 490 days


#8 posted 296 days ago

moke- I do believe you are correct. Yellow socks and it wouldn’t hurt to wear a pair of his wife’s panties as well (also yellow).

-- http://www.etsy.com/shop/UncannyValleyWoods

View pintodeluxe's profile

pintodeluxe

3322 posts in 1440 days


#9 posted 296 days ago

It sounds like the feed rate changes near the end of your cut. If the burning only occurs at the ends of the cut, it is likely feed rate. I solved this problem by using an extra-long edge guide, so I could cut past the workpiece without slowing down much.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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