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Spacing Dado cuts

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Forum topic by scribble posted 04-14-2016 12:24 PM 422 views 0 times favorited 5 replies Add to Favorites Watch
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scribble

113 posts in 1668 days


04-14-2016 12:24 PM

Topic tags/keywords: tablesaw question milling traditional

I for the life of me can’t wrap my head around setting up repetative dato cuts for say a sandpaper storage unit.
I want to cut 1/4” dado’s all up and down the side panels to allow hardboard dividiers to be used and want them all spaced evenly.
I know the first dado from the bottom to be 2” to the start of the dado cut so I set the fence at 2” and cut no problem there. But I want them all 2” spaced apart. I know it is very simple but just getting lost in my figuring out.

Please help.

-- If you can't read it Scribble wrote it!! “Experience is merely the name men gave to their mistakes.”


5 replies so far

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cabmaker

1507 posts in 2277 days


#1 posted 04-14-2016 12:33 PM

Try 2 1/4

View Cooler's profile

Cooler

277 posts in 311 days


#2 posted 04-14-2016 12:45 PM

It’s much simpler on a radial arm saw.

Here is an example on the table saw: http://s256.photobucket.com/user/SleeperN06/media/WoodWorking/Table%20Saw/DadoIbdexJig_1_zpsjcd4ldyj.jpg.html

-- This post is a hand-crafted natural product. Slight variations in spelling and grammar should not be viewed as flaws or defects, but rather as an integral characteristic of the creative process.

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jbay

820 posts in 367 days


#3 posted 04-14-2016 01:20 PM

Use a scrap pc of wood to check each setting. Make a dado, measure. If the dado is 1 3/4”, move the fence over 1/4” and the dado will be 2”. Do the same for each space.
Another way is to mark out the dado’s on the board and line up the marks for each dado and don’t even look at the fence.

-- My “MO” involves Judging others, playing God, acting as LJs law enforcement, and never admitting any of my ideas could possibly be wrong or anyone else's idea could possibly be correct -- (A1Jim)

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JBrow

822 posts in 388 days


#4 posted 04-14-2016 03:35 PM

scribble,

The distance the fence is moved for the next dado is the Space between Dados (S) + The Width of the Dado (W).

Equally and precisely spaced dados can be cut without measuring. First cut a spacer block that is S+W long, in your case 2-1/4” (2” + ¼”). Set the fence and cut the first dado. To set up for the next and all subsequent dados, the fence is repositioned against a stop block clamped to the fence rail on the side of the fence away from the dado blade. I like spring clamps for this. But before clamping the stop block in place, set the spacer block against the backside of the fence and the stop block against the spacer block, then clamp the stop block. With the stop block clamped in place and the spacer block removed, the resulting gap is the distance the fence must be moved. Re-position the fence against the stop block. The fence will be adjusted by the length of the spacer block and the next dado will be correctly positioned.

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scribble

113 posts in 1668 days


#5 posted 04-14-2016 04:05 PM



Use a scrap pc of wood to check each setting. Make a dado, measure. If the dado is 1 3/4”, move the fence over 1/4” and the dado will be 2”. Do the same for each space.
Another way is to mark out the dado s on the board and line up the marks for each dado and don t even look at the fence.

- jbay

Ok thank you, I understand now just add my spacing plus my cut width to each measurement when moving the fence for each cut.

-- If you can't read it Scribble wrote it!! “Experience is merely the name men gave to their mistakes.”

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