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Forum topic by Quailguy posted 10-28-2015 05:51 PM 521 views 0 times favorited 9 replies Add to Favorites Watch
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Quailguy

33 posts in 652 days


10-28-2015 05:51 PM

I have an older Craftsman 10” contractor saw with Exacta-Rip fence. Recently I’ve noticed that the bottom edges of cut boards are chipped off. This happened both with walnut and Baltic birch plywood. I confirmed the Freud blade is perpendicular to the table, aligned to the miter slot, and no noticeable damage to the blade. What am I missing?


9 replies so far

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MrUnix

4209 posts in 1660 days


#1 posted 10-28-2015 05:53 PM

What am I missing?

A ZCI maybe?

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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Quailguy

33 posts in 652 days


#2 posted 10-28-2015 06:10 PM

That may be true, but why all of a sudden? Never saw this problem before, but then again, isn’t that typical of tis hobby…

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tomsteve

393 posts in 680 days


#3 posted 10-28-2015 08:32 PM

how many teeth on the blade and what type of grind on the blade?
how long since it was sharpened?
its usually a sign to me its time to sharpen.

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Quailguy

33 posts in 652 days


#4 posted 10-28-2015 08:42 PM

Freud Fusion 40 tooth. its worn off but I think its a 33? degree grind. I’ve given in reasonable use for about a year, so you may be right. Thanks

Mike

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patcollins

1420 posts in 2326 days


#5 posted 10-28-2015 08:42 PM

The bottom chips out because the blade is coming out of the wood there and it is not backed supporting it so it splinters. You can either put a sacrificial piece under it for support or a zero clearance insert.

Some wood (plywood especially) chips more than others as well as some types of blades chip more than others.

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TheFridge

5765 posts in 947 days


#6 posted 10-28-2015 08:58 PM

New zero clearance insert at the least

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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dhazelton

2324 posts in 1758 days


#7 posted 10-28-2015 09:55 PM

Is the blade set too high with too fast a feed rate?

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Quailguy

33 posts in 652 days


#8 posted 10-28-2015 09:57 PM

I think it’s a sharpness issue, but the zero clearance insert theory makes sense. Off to the sharpening shop. Thanks to everyone.

View rwe2156's profile

rwe2156

2190 posts in 942 days


#9 posted 10-29-2015 02:54 PM

As the blade got duller, you started getting more tear out.

You still need a ZCI.

-- Everything is a prototype thats why its one of a kind!!

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