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Laundry hamper #9: Half-laps in the slats

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Blog entry by Dave Polaschek posted 09-05-2021 03:56 PM 772 reads 0 times favorited 22 comments Add to Favorites Watch
« Part 8: Door frame mitered half-lap joints Part 9 of Laundry hamper series Part 10: First door: Gluing it up »

Built a jig last night to help me cut the half-laps in the slats. If you divide the slat into 3” chunks, each crossing slat will be in the center of that chunk.

So I glued down two rails to hold the slat while I cross-cut it, with a pencil mark for the end of the slat, and a piece of wood to sit in the gap to align where I should cut the next joint. I also cut a notch so I can use this same guide to hold the slat while I chisel out the waste.

After cutting the first notch…

I align it with the block in my jig

And saw the two edges of the next notch

Then I move it to the notch in the guide and saw a few more kerfs (three seems to work well for the 7/8” wide notch I’m making)

Then I chisel out the waste, using the chisel across the grain and bevel-up, then with the grain, bevel-down to clean up the bottom

Do that a few more times, times ten slats, and I’ll be ready to glue them up.

I’ll add a picture once all ten are done. Note that these joints will probably require some tuning. Some of the slats are a little wider than 7/8 inch, so I’ll need to plane them narrower so they’ll fit. But the glue joints where the slats cross don’t have to be especially strong, just solid enough to hold the grid stable while I glue up the frame.

[ Time passes ]

Well, all four of the oak slats are done now. I needed to narrow three of the four oak slats, and five of the six walnut slats before everything would come together.

But I measured (and planed) each oak slat as I cut the half-laps in it, and had numbered all of the slats so I didn’t get them out of order.

And once I had the two first oak slats woven in, I realized I wasn’t going to need any glue to hold the slats. In fact, I needed to use Earl’s dice mallet to persuade the third oak slat into place.

And for the fourth slat, I cut all of the half-laps as deep as I dared, which made the oak more flexible when I went to weave it between the walnut slats. And between that, and cutting one of the slots wider (because I couldn’t plane down the wide end of the walnut slat that was about 1/32 too wide), and tap-tap-tapping with the dice mallet, everything went together.

And that’s how they’re going to stay. I suspect I could get them apart if I tried, but there would be a very real risk of breaking something, and they’re rock solid as they are, so that’s how they’ll stay. If the lattice is slightly out of square, I’ll just tap it a little and hope I can square it up. Or cut deeper grooves in the frame so it can be slightly out of square.

-- Dave - Santa Fe



22 comments so far

View bandit571's profile (online now)

bandit571

29754 posts in 3933 days


#1 posted 09-05-2021 04:00 PM

Looks good from here….maybe use a router plane to clean up the slots? Cutter set to final depth, and just run it back and forth a few times?

-- A Planer? I'M the planer, this is what I use

View Dave Polaschek's profile

Dave Polaschek

8488 posts in 1832 days


#2 posted 09-05-2021 04:32 PM

I thought about that, but my good router plane is still in the bottom of the one box I haven’t unpacked since moving. I’m just cutting the notches a little (between 1/32 and 1/16) deeper than they need to be, and I’ll shim with a piece of oak veneer if there are any gaps that are too big.

I expecting I’ll “clamp” the grid of slats by setting a bag of sand on top of it.

-- Dave - Santa Fe

View Oldtool's profile

Oldtool

3327 posts in 3440 days


#3 posted 09-05-2021 04:36 PM

Nice work, I like the weave or over – under of the slats, should add strength to the assembly.

-- "I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The point is to bring them the real facts." - Abraham Lincoln

View Dave Polaschek's profile

Dave Polaschek

8488 posts in 1832 days


#4 posted 09-05-2021 05:08 PM

Thanks, Tom! It’s a lot of work for each door, but part of that has been because I’m figuring things out as I go. If I ever do this again, I’ll have jigs built and will know what I’m doing, which generally makes things easier.

-- Dave - Santa Fe

View GR8HUNTER's profile

GR8HUNTER

9013 posts in 1962 days


#5 posted 09-05-2021 05:20 PM

looks like your doing a GR8 JOB on it cant wait to see them assembled :<)))))))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN :<))

View oldrivers's profile

oldrivers

2739 posts in 2816 days


#6 posted 09-05-2021 06:30 PM

That’s good innovative enjoy the fruits of your labors, good job.

-- Soli Deo gloria!

View Dave Polaschek's profile

Dave Polaschek

8488 posts in 1832 days


#7 posted 09-05-2021 06:50 PM

Thanks, Tony! Me too!

Thanks, Oldrivers!

-- Dave - Santa Fe

View Smitty_Cabinetshop's profile

Smitty_Cabinetshop

17536 posts in 3868 days


#8 posted 09-05-2021 07:27 PM

Very interesting, a unique project, looks great somfar!

-- Don't anthropomorphize your handplanes. They hate it when you do that. - OldTools Archive -

View duckmilk's profile

duckmilk

4846 posts in 2574 days


#9 posted 09-05-2021 07:57 PM

Good idea, thanks for showing us.

-- "Duck and Bob would be out doin some farming with funny hats on." chrisstef

View Dave Polaschek's profile

Dave Polaschek

8488 posts in 1832 days


#10 posted 09-05-2021 09:03 PM

Thanks, Smitty! I didn’t pick the easiest way to do this, but it’ll be unique!

Thanks, Duck!

Note that I updated the writeup with the finished lattice.

-- Dave - Santa Fe

View robscastle's profile

robscastle

8283 posts in 3454 days


#11 posted 09-05-2021 09:08 PM

Ah ha !

-- Regards Rob

View Dave Polaschek's profile

Dave Polaschek

8488 posts in 1832 days


#12 posted 09-05-2021 09:12 PM

Exactly, Rob! I’m a weaver.

-- Dave - Santa Fe

View robscastle's profile

robscastle

8283 posts in 3454 days


#13 posted 09-05-2021 09:21 PM

And a very good one at that !

-- Regards Rob

View Dave Polaschek's profile

Dave Polaschek

8488 posts in 1832 days


#14 posted 09-05-2021 10:12 PM

Thank you kindly, sir!

-- Dave - Santa Fe

View crowie's profile

crowie

5038 posts in 3200 days


#15 posted 09-05-2021 10:37 PM

This is woodworking art Dave!

-- Lifes good, Enjoy each new day...... Cheers from "On Top DownUnder" Crowie

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