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Simple Box Making - Issues cutting off the lid

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Forum topic by Brian Anderson - UBWoodman posted 12-11-2014 07:56 PM 1080 views 0 times favorited 8 replies Add to Favorites Watch
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Brian Anderson - UBWoodman

56 posts in 2420 days


12-11-2014 07:56 PM

Hello all…

I am making some small simple boxes with box joints. When it comes to sawing the lid off I have a few issues. I am using a combo blade approx 1/8” and I have tried it making two parallel side cut first then the ends and I have tried it one side followed by another all around the box. My fence is locked down but both times the cuts were slightly different forcing me to try and even it on the belt sander to get the lid to fit flush, this is never perfect. Is there some trick to this I dont know or do I need a thinner kerf or different type of blade?

Thanks for the help

UB

-- http://www.ubwoodman.com


8 replies so far

View rantingrich's profile

rantingrich

372 posts in 813 days


#1 posted 12-11-2014 08:00 PM

If you are simply cutting a BOX top off for a lid, I assume a straight cut, why are you not using the deepest (Widest) Bands saw blade you can?

You should, as well as everyone else, watch this bandsaw clinic video…..

https://www.youtube.com/watch?v=wGbZqWac0jU

-- Rich

View Bill White's profile

Bill White

4459 posts in 3428 days


#2 posted 12-11-2014 08:06 PM

I don’t cut completely through when cutting off the tops. Just almost, then finish with a fine tooth Japanese pull saw. Some folks will cut and then place a thin piece as thick as the kerf taped on to the box for the final cut.
I just find that the hand sawing doesn’t create the problem of a potential disaster.
Bill

-- bill@magraphics.us

View ShaneA's profile

ShaneA

6476 posts in 2066 days


#3 posted 12-11-2014 08:12 PM

You may want to check the fence alignment on your table saw. If you get it dialed in, you should end up pretty darn near parallel all the way around. A block, plane if you have one can help you clean up any irregularities.

I also just cut slightly short of all the way through and finish with a box knife.

View Brian Anderson - UBWoodman's profile

Brian Anderson - UBWoodman

56 posts in 2420 days


#4 posted 12-11-2014 08:29 PM

@Rich—Thanks for link – thats good information, I should have stated I am using a table saw.

Thanks Bill and Shane, I completely forgot about that trick, I do think its more an issue of the box flexing the more cuts I make. I have seen video of someone sawing most of the way through and then finish by hand..wish I had remembered that but I have several more to try it on. Thats going to be a big help.

-- http://www.ubwoodman.com

View jmartel's profile

jmartel

6579 posts in 1618 days


#5 posted 12-11-2014 09:06 PM

Brian, make a few wedges that you can stick in the kerfs after you finish a side. That will keep the lid from flopping around and messing up your cut.

-- The quality of one's woodworking is directly related to the amount of flannel worn.

View RRBOU's profile

RRBOU

136 posts in 1760 days


#6 posted 12-11-2014 11:13 PM

If your box is not at 90° in all directions and your blade aligned at 90° to the table you will never get a perfect cut. It is best to just cut slightly less than the thickness and then finish the cut with a razor knife or a very fine saw, or just deal with flushing the cuts down with sand paper. The bigger your box the more the error will be pronounced if everything is not at 90°

-- If guns cause crime all of mine are defective Randy

View Brian Anderson - UBWoodman's profile

Brian Anderson - UBWoodman

56 posts in 2420 days


#7 posted 12-17-2014 02:56 PM

Thanks everyone for the advice, I cut most of the way through and used shims before making the last cut, came out perfect.

—UB

-- http://www.ubwoodman.com

View waho6o9's profile

waho6o9

7180 posts in 2045 days


#8 posted 12-17-2014 03:03 PM

Nice save!

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