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dado problem

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Forum topic by sawdust99 posted 03-31-2014 07:34 PM 473 views 0 times favorited 9 replies Add to Favorites Watch
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sawdust99

18 posts in 1639 days


03-31-2014 07:34 PM

I’m trying to cut 1/8 inch deep dadoes around the center of a keepsake box on top and 4 sides. I have done everything on my table saw and can’t get the dadoes to match. I made sure everything was in line on setup with a caliiper. for some reason one or more of the dadoes offsets the matching. Is there a better way to do these dadoes. The box is 6” wide, 9” long and 3” high. Thanks for any help.

Bob


9 replies so far

View BinghamtonEd's profile

BinghamtonEd

1593 posts in 1117 days


#1 posted 03-31-2014 07:54 PM

Did you have a constant reference for all the dados? In other words, did you reference the bottom edge against the fence for all, or the top edge, etc? Are all your pieces accurately cut ot the same size? I don’t know how you’d have offset dados unless your reference point changed, or the fence moved. We’re you using a miter gauge, and did you verify it is properly set at 90deg to the blade?

-- - The mightiest oak in the forest is just a little nut that held its ground.

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sawdust99

18 posts in 1639 days


#2 posted 03-31-2014 08:13 PM

I did all that and can’t find any place that would cause the problem . Been working on problem for 2 days. It may just be something simple and I’m missing it. That is why I asked for help.

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BinghamtonEd

1593 posts in 1117 days


#3 posted 03-31-2014 08:19 PM

Understood, I thought you were looking for input on what could have gone wrong. Until we figure that out, we don’t know how to improve on it. If the fence stayed put, and the miter slot is parallel to the blade, and miter gauge (if used) is square to the slot, I think the only other cause would be how the stock was actually fed through the saw. How far offset are they? And is the dado parallel to the reference edge?

-- - The mightiest oak in the forest is just a little nut that held its ground.

View gfadvm's profile

gfadvm

11505 posts in 1437 days


#4 posted 04-01-2014 12:44 AM

I would check to see if you have some ‘toe out’ on your tablesaw fence (back edge being a skosh further from the blade). Good for preventing kickback, but a problem when sawing around a box.

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

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kdc68

2071 posts in 1024 days


#5 posted 04-01-2014 12:44 AM

+1gfadvm

-- Measure "at least" twice and cut once

View MrRon's profile

MrRon

2980 posts in 1991 days


#6 posted 04-01-2014 04:53 PM

Can you use a router instead?

View HorizontalMike's profile

HorizontalMike

6968 posts in 1661 days


#7 posted 04-01-2014 05:04 PM

Possible suggestion: Before cutting each of the four sides, why not cut the dado while the wood it still as one and then cut to length?

-- HorizontalMike -- "Woodpeckers understand..."

View CharlieM1958's profile

CharlieM1958

15795 posts in 2966 days


#8 posted 04-01-2014 06:20 PM

Mike’s got the right idea.

My first thought was toe-out on the fence, as gfadvm mentioned. But if everything with the saw set up is 100% correct, the problem has to be with the box. If the opposing sides are not all perfectly perpendicular, and all the angles are not exactly 90 degrees, you’ll get the result you’re getting.

-- Charlie M. "Woodworking - patience = firewood"

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sawdust99

18 posts in 1639 days


#9 posted 04-01-2014 08:21 PM

After checking the saw for any possible causes of my problem , I no longer think it is the saw. I’m going to make another box and check each piece as I go to see what may cause my problem. I thank everyone for your input.

Bob

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