4 Beam Marking Gauge

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4 Beam Marking Gauge

Postby jtri » Sat Apr 20, 2019 6:15 pm

I like to use a cutting gauge rather than a marking gauge and many times need a few on the bench different set to different dimensions.

The Sholl 4 beam marking gauge
Sholl 4 beam marking gauge.png
inspired me to make one. I decided to have each beam be able to be secured independently

It was a straight forward model
SketchUp Model 4 beam marking gauge.png


The prototype I made works well
20190420_122321.png
A lot of fussy work to get it all made and fit, but the feel in my hand is fine and it functions well.

I have a piece of Rosewood that I will be working on to make a final version and was thinking of adding a ruler to the beams to speed up setup. Anyone with an opinion?

Thanks
Jeff
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Re: 4 Beam Marking Gauge

Postby Dave R » Sat Apr 20, 2019 6:26 pm

Very nice. How did you do the metal bits radiating out to the corners in the real one?
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Re: 4 Beam Marking Gauge

Postby davidheim1 » Sat Apr 20, 2019 8:55 pm

Nice model and a super, innovative tool. You might consider inlaying a strip of brass on each arm, so that the screws holding the arms don't dig divots in the wood.
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Re: 4 Beam Marking Gauge

Postby jtri » Sat Apr 20, 2019 9:30 pm

Dave - for metal dowels in the corners I reamed the holes for a press fit with some adhesive. To form the X of the metal in the middle I joined 2 pieces of 1/16" stock to form the X and it is a loose press fit into grooves in the wood. That fit needs to be just so. I split the wood on my 1st attempt as it was too tight, 2nd attempt also!
David - I considered the inlay in the beam for the bearing surface but decided to use an "L" shaped piece for metal to spread the load and keep the beam clean. That piece of metal is held into place with the slotted screws on the bearing surface of the gauge.
Your thoughts on adding a scale or ruler to the beams?
Thanks for the complements, the only innovation I added was each beam is independently secured. It was a lot of fun to make.
Jeff
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Re: 4 Beam Marking Gauge

Postby tuna1957 » Sat Apr 20, 2019 10:36 pm

most excellant :thumb: :thumb:
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Re: 4 Beam Marking Gauge

Postby chordwizard » Tue Apr 23, 2019 3:12 pm

Nicely done! I don't use marking gauges near as often as I should but I appreciate markings on the ones I have. I don't expect the markings to be accurate enough to set and forget so tweaking is the norm. That is where the markings come in. When you have to move it a smidge or a frogs hair you can reference off one of the marks and see if you have actually moved it or not and by how much.
Man ... now I just may have to make one of those.
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Re: 4 Beam Marking Gauge

Postby jtri » Wed Apr 24, 2019 1:39 am

Thanks Chordwizard I hope you make one. My design is a bit time consuming so here are a couple of other options I found on the web that you might consider One by Ulmia and an old Stanley that is very nice

85490_1900x.png


Stanley 198 2 beam marking gauge.jpg
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Re: 4 Beam Marking Gauge

Postby jtri » Tue Jun 11, 2019 12:28 am

I needed to make another gauge and fix a few things. Had some cocobolo and learned the dust bothers me, so it took a bit to get it done, but I am happy with the gauge.

20190610_173701.jpg
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jtri 
 

Re: 4 Beam Marking Gauge

Postby Dave R » Tue Jun 11, 2019 12:42 am

Ain't that sweet?!
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Re: 4 Beam Marking Gauge

Postby jtri » Tue Jun 11, 2019 12:51 am

Thanks Dave! Now thanks to you I need to make another Moxon vice. Thinking I might convert an acme nut into a die and Acme threaded rod into a tap for the wooden threads. Always wanted to try that and see how well it works. Also thinking about adding a register/stop in the vice cheek so the board when clamped is 90 deg to the top of the cheek.
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Re: 4 Beam Marking Gauge

Postby Dave R » Tue Jun 11, 2019 1:10 am

That one I modeled uses a Gold's Gym Dumbbell handle cut in half for the screws. $6.87 with the knobs at WallyWorld. The T-track is for hold down clamps. The guy who designed it clamps a saddle square on one side to align the work with it. He uses another hold down clamp to hold the tailboard while he marks out for the pins. He was using a Veritas saddle square but he made a new one of wood today.
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