miter angle not lining up

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Forum topic by woodworkingdrew posted 04-17-2014 12:11 AM 1121 views 0 times favorited 4 replies Add to Favorites Watch
View woodworkingdrew's profile


190 posts in 1756 days

04-17-2014 12:11 AM

I am building three planter boxes out of con heart redwood. I am having a really hard time get true 45 degree angles. I tried 46 degrees, and 44 degrees and still cant line them up. There is either a gap at the base or top of the angle. Any advice would be great. Thanks

-- Andrew, California

4 replies so far

View pintodeluxe's profile


5757 posts in 2960 days

#1 posted 04-17-2014 12:14 AM

Are the boards straight? Outdoor lumber is notoriously bowed or cupped, which introduces errors in your cut. I don’t care for miters on outdoor projects, because even if you get it perfectly aligned, the miter will open up after one season exposed to the elements.

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

View gfadvm's profile


14940 posts in 2837 days

#2 posted 04-17-2014 12:15 AM

Wixey digital angle gauge to set the angle on your tablesaw will assure accurate 45 degree cuts. Then make sure that all your sides are exactly the same length.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View dawsonbob's profile


3032 posts in 1902 days

#3 posted 04-17-2014 12:23 AM

Here’s what gfadvm is talking about:

Slap one of these magnetic gauges on your saw blade and dial in perfect angles for cutting.

-- Mistakes are what pave the road to perfection

View Marcus's profile


1163 posts in 2166 days

#4 posted 04-17-2014 12:53 AM

I agree with pinto…unless it’s freshly jointed and planed, probably a but twisted or cupped. And just like he said, for a planter box, those joints are probably going to open and close as they please!

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