Delta Mortiser 14-651 #11: First square holes

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Blog entry by LegendInMyOwnMind posted 05-24-2011 03:12 AM 2944 reads 0 times favorited 2 comments Add to Favorites Watch
« Part 10: Assembling the mortising machine Part 11 of Delta Mortiser 14-651 series Part 12: Quick and Dirty Tenon Cutting Jig »

I grabbed a piece if wood. It happened to be plywood and punctured a couple of holes. Pretty cool.

The fence has two lockdowns and a knob to move the fence. The lockdowns are spring loaded so you have to tighten, lift then up and tighten them again. the knob allows some pretty fine movement.

Here’s one of the two the fence lockdowns:

Here’s the knob to move the fence:

There is a #4 allen screw used to lock the box around the bit and another one to lock down something else. You need one of these tools to work with this tool. Fortunately there are extra holes in the bit holder.

I did a very rough tenon on the table saw:

I cut a through mortise.

It fits pretty well, but I need to play with the positioning.

I don’t know how to square the box to the fence. It’s not clear to me.

I also don’t know how to get the box to cut at just the right position on the board (centered).

-- Doug - When all you own is a hammer, everything looks like a nail.

2 comments so far

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6956 posts in 2624 days

#1 posted 05-24-2011 04:23 AM

I find the center on my mortiser by flipping the work piece end for end. Kind of like centering a groove or dado on the table saw. If the mortise will only be one chisels width, I use the brad point of the auger bit to determine center. Flipping the board end for end making small adjustments in the fence, until the dimple from the point isin the same place after flipping. Not sure if there is an easier way, but it will find the center.

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199 posts in 2613 days

#2 posted 05-24-2011 04:42 AM

Thanks guys, that really helps. I think it’s true that it doesn’t have to be perfectly square.

Also, good tip on using the brad tip. I need more light so that I can see it better, that’s half the problem now.

I built a quick and dirty tenon jig in the next BLOG entry which really makes this nicer.

-- Doug - When all you own is a hammer, everything looks like a nail.

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