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Forum topic by KMX posted 01-03-2016 04:58 PM 846 views 0 times favorited 14 replies Add to Favorites Watch
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KMX

4 posts in 340 days


01-03-2016 04:58 PM

Topic tags/keywords: question

Hello all,

I am trying to make perfect straight crosscuts for a face frame using a Dewalt DW713 10” miter saw with a 80T blade. However, this keep happening…

The images show a finished 1×2 just cut and then placed back side by side. The gap is the exact path the blade has traveled.

What am I doing wrong?

Tried:

Using a different power outlet.
Different “brand new” blade.
Loosening/tightening the blade bolt.
Using a sacrificial zero clearance fence.

Many thanks!


14 replies so far

View MadMark's profile

MadMark

978 posts in 918 days


#1 posted 01-03-2016 05:37 PM

Your miter guide is not exactly perpendicular to the blade. It also looks like the stock is slipping as you cut, perhaps a strip of sand paper on the face of the miter fence will help. A ZCI may also help the edge shredding. Saw slower.

When all else fails hit it with a hammer!

M

-- Madmark - Madmark2150@yahoo.com Wiretreefarm.com

View a1Jim's profile

a1Jim

115202 posts in 3042 days


#2 posted 01-03-2016 05:46 PM

What mark sad or you blade is bent or your bearings are bad in the chop saw, turn it on and see if you blade wobbles from side to side a little when looking straight at the edge of the blade. If so you need a new blade or a saw shop might be able to straighten it.

-- http://artisticwoodstudio.com Custom furniture

View Holbs's profile

Holbs

1377 posts in 1494 days


#3 posted 01-03-2016 05:51 PM

have you fine tuned your saw? My Bosch miter saw was not perfectly aligned out of the box. I had to spend 2-3 hours with a square to make fence, blade, compound angles, etc exact.

See if this helps at all: https://www.youtube.com/watch?v=OuaoxMWQZkQ

-- Yes, my profile picture is of a Carpenter Bee! The name is derived from the Ancient Greek "wood-cutter"

View MrUnix's profile

MrUnix

4230 posts in 1664 days


#4 posted 01-03-2016 06:49 PM

Adjust your saw according to the manual. It has the procedure for squaring the blade to the table and the fence to the blade – starting on page 6.

Cheers,
Brad

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

View KMX's profile

KMX

4 posts in 340 days


#5 posted 01-06-2016 04:53 AM

Thank you very much for the replies.

Recalibrating the saw unfortunately did not yield any positive results, nor did clamping the stock to be cut in place. I eventually opted for a new lower tooth blade and that seems to have done the trick. How my original blade became warped I am no sure, but I’m guessing I over tightened the blade bolt a couple times.

Thank you for the input.

View Shadowrider's profile

Shadowrider

183 posts in 674 days


#6 posted 01-06-2016 05:03 AM

If you are using a thin kerf blade (common on mitre saws and blades sold for them) it may be flexing. A stiffener might help.

View TTF's profile

TTF

154 posts in 2642 days


#7 posted 01-06-2016 05:05 AM

I think something is loose and you’re getting side-to-side drift.

-- Troy | http://tf-workshop.com | The more I see nature, the more I am amazed at the Creator. - Louis Pasteur

View KMX's profile

KMX

4 posts in 340 days


#8 posted 01-06-2016 06:20 AM

I did forget to mention that the uneven crosscutting was an issue on my old Hitachi miter saw, hence I am suspecting the blade as the culprit since the same problem is happening on the brand new Dewalt DW713.

@Shadowrider
The idea of a stiffer blade is very intriguing. I am indeed using a thin kerf blade (very common). Do you have any recommendations for a thicker blade?

Many thanks.

View TheFridge's profile

TheFridge

5765 posts in 951 days


#9 posted 01-06-2016 06:39 AM

I’d say just don’t tighten it with the hand of God and you should be fine. Stiffeners could limit depth of cut.

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

View EEngineer's profile

EEngineer

1061 posts in 3078 days


#10 posted 01-06-2016 11:22 AM

I saw similar things when I tuned up my HF 12” slider. I spent a long time “tuning”, got everything aligned perfectly BUT I still saw crap like you show in your pictures.

Eventually I scrapped the blade that came with the saw and put on a Diablo 80 tooth blade. Cleared that right up! Interestingly enough, the original blade was full kerf and the new Diablo was thin kerf – no stiffener. I can’t recommend the Diablo series of blades enough. They have migrated to all my circular tools in the shop – table saw, circular saw and miter saw.

I think the cheaper blades actually flex during the cut. If I look closely at your first picture, it seems like it isn’t a straight cut – the cut looks bowed in the center. That’s what I experienced on my saw. I am beginning to believe that the blade makes a huge difference!

-- "Find out what you cannot do and then go do it!"

View kaerlighedsbamsen's profile

kaerlighedsbamsen

1177 posts in 1178 days


#11 posted 01-06-2016 11:48 AM

One last question that has not been asked: Were the cuts shown done using the “sliding” function on the saw?
I have found that even on brand new saws they can have quite a slack and is, in that case, best used ony for rougher cuts. Lock the saw and use only plunge cuts for critical stuff.

Hope this help!

-- "Do or Do not. There is no try." - Yoda

View Kazooman's profile

Kazooman

628 posts in 1417 days


#12 posted 01-06-2016 01:09 PM



One last question that has not been asked: Were the cuts shown done using the “sliding” function on the saw?
I have found that even on brand new saws they can have quite a slack and is, in that case, best used ony for rougher cuts. Lock the saw and use only plunge cuts for critical stuff.

Hope this help!

- kaerlighedsbamsen

It is a compound miter saw, but I don’t believe it is a slider.

View KMX's profile

KMX

4 posts in 340 days


#13 posted 01-06-2016 04:22 PM

The DW713 is indeed a non-sliding miter saw.

I will try a thicker blade and see if that makes an improvement.

View waho6o9's profile (online now)

waho6o9

7174 posts in 2042 days


#14 posted 01-06-2016 04:29 PM

That happened to me so I used a magnetic angle cube and found out

I had a bent blade. Oops.

Put on new blade and the cube read zero in different locations.

Good luck now

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