Problems with miter saw cutting at an angle.

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Forum topic by itsme_timd posted 08-14-2008 05:22 PM 3469 views 0 times favorited 6 replies Add to Favorites Watch
View itsme_timd's profile


690 posts in 3855 days

08-14-2008 05:22 PM

Topic tags/keywords: miter saw adjust 45 question

Hi LJ’s,

I’ve got a Firestorm 10” miter saw an I’m having issues with it cutting straight. For example, I needed to cut a piece on a 45 yesterday and when I made the cut it ran at an angl across the piece.

Here’s an artist’s rendeering of what I’m experiencing…

I can’t fnd the manual to my saw (of course) and I’m not sure how to adjsut this or if it is adjustable.

Any help is greatly appreciated!

-- Tim D. - Woodstock, GA

6 replies so far

View Steelmum's profile


355 posts in 3986 days

#1 posted 08-14-2008 06:25 PM

I just went to the Firestorm website. They have manuals for download in the customer service area. I am not familiar with your saw. I just use a small square and make sure my blade is square to the table and the fence.

-- Berta in NC

View lew's profile


12102 posts in 3779 days

#2 posted 08-14-2008 06:50 PM

From your picture, it looks as though the vertical position is off a little.

As “Steelmum” said, use a small square to check to see if the the blade is perpendicular to the table. also use a framing square to check if the blade travels perpendicular to the back fence.


-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View Scott Bryan's profile

Scott Bryan

27250 posts in 3846 days

#3 posted 08-14-2008 10:25 PM

One tool that I have found helpful with setting my miter saw is the Wixey digital angle gauge.

Tony has posted a review of it here.

This tool is well worth the money.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View itsme_timd's profile


690 posts in 3855 days

#4 posted 08-15-2008 03:36 AM

Thanks everyone, appreciate the info – it’s a big help.

-- Tim D. - Woodstock, GA

View mbike1356's profile


3 posts in 3635 days

#5 posted 08-16-2008 06:12 PM

is the saw a compound angle saw? if it is the 10” 15-Amp Miter Saw with Laser (FS100L) then there is an adjustment knob in the back of the saw that allows for the head to be moved to an angle. This is probably out of kilter loosen the knob and make the adjust ment necessary with a square and probably a wrench. The saw will sometimes move out of adjustment just by picking it up by the handel. It is always a good practice to verify trueness in new tools befor you do anything else with them. This will often times enlighten you to things the tool is capable of when you had no idea

View SteveKorz's profile


2134 posts in 3738 days

#6 posted 08-16-2008 06:47 PM

I had something similar to this happen to me on my DeWalt. It cut great for a long time, then I switched blades (went to a cheaper one), and it cut terribly. The blade would actually cut crooked and at an angle thru the wood when the squares said everything was good and straight. I junked the blade, and bought a really nice one. Now, it cuts like a dream.

You might check for excessive bearing play, and almost all of these have adjustments that you can make to the “0” mark for square. Go to the manufacturers website and you’ll probably find a manual.

Good luck,


-- As iron sharpens iron, so one man sharpens another. (Proverbs 27:17) †

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