#12 Hollow and Round

**Mountain Ash** · 14th August 2020, 08:24 PM

Hi all. I believe I have stepped up in my planemaking journey. Continuing to work on my H + R set (goal is to have a complete half set #2 - #18) and expand my blacksmithing experience, I set out to make a matching pair. Up to this point I have used existing planes as the model to copy and make its opposite. This time I had no #12 to base my design on and had to figure it out from scratch. M S Bickfords website came to the rescue with detailed info about how to work out the arc of the blades. Thanks again to Soundwave for the steel and thanks to Bushmiller and Doug for the annealing and tempering advice. Hollow blade was a lot easier to shape than the rounding one, especially as the blade gets wider and mistakes become more obvious. Making both at the same time was great for efficiency and my mortices are getting better with every one completed. Finally made a template for the wedge shape too (although they are probably still a bit long). Using them was wonderful (when finally adjusted right, especially the round) and I am so glad I have a cone shaped waterstone. All shaping on the round was done freehand - does anyone have a jig/ tool rest idea for doing these? My photography looks a bit better too, except for orientation. See if you can find where I slipped with the chisel

- it was when I was cutting the arris.

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20200814_083511.jpg

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20200814_083601.jpg

**Simplicity** · 14th August 2020, 09:15 PM

They look really fantastic Mountain Ash,
But I really cant comment further,as I haven’t been following along.

Cheers Matt.

**bueller** · 14th August 2020, 09:39 PM

Beautiful work mate! I'd love to start making my own woodies one day but in the meantime I'll have to be satisfied drooling over everyone else's.

**auscab** · 15th August 2020, 12:48 AM

They look great !
I like that they have that early look with the shape to the wedge and the chamfers . And Beech! . How long are you doing them ?
Good on you !

Rob

**IanW** · 15th August 2020, 10:33 AM

First-rate effort, MA. You are progressing at an amazing rate! .....

Cheers,

**Mountain Ash** · 15th August 2020, 11:01 AM

Thank you Matt, Bueller, Rob and Ian. They are 240mm long and 95mm tall. This seems to be standard amongst the originals I have. The wedge shape is copied from Matt Bickford and I think he calls it the English style, more 18th century than 19th I believe. I guess the upside of a change in definition of stage 4 restrictions (no home renovations in occupied homes) is that I will be home for the next month.

Just out of curiosity does anyone know the origin of the term "to arris an edge". Is removing the sharp 90° corner "arrissing" or is the 45° edge the "arris"? Can a pencil round be considered an arris? Why is a stopped chamfer not a stopped arris? I guess I'm asking is it a verb or a noun?

**Cklett** · 15th August 2020, 11:08 AM

They are awesome!

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**taz01** · 15th August 2020, 11:45 AM

Great work MA.

Could you do a tutorial thread next time you do a pair?

Regards,

Adam

**auscab** · 15th August 2020, 11:49 AM

Originally Posted by Mountain Ash

Just out of curiosity does anyone know the origin of the term "to arris an edge". Is removing the sharp 90° corner "arrissing" or is the 45° edge the "arris"? Can a pencil round be considered an arris? Why is a stopped chamfer not a stopped arris? I guess I'm asking is it a verb or a noun?

My understanding has always been.
The Arris is the sharp corner. It can be removed by sanding ,scraping shaving with chisel , plane or spokeshave .
By taking off 1mm or even less ,the Arris is gone .

Them things on the plane are a Chamfer .

See here for a US version .
Sam Allen's Dictionary of Woodworking Terms

Or the English talking about it .
Arris - Woodwork UK

Rob

**IanW** · 15th August 2020, 01:20 PM

Originally Posted by Mountain Ash

Just out of curiosity does anyone know the origin of the term "to arris an edge". Is removing the sharp 90° corner "arrissing" or is the 45° edge the "arris"? Can a pencil round be considered an arris? Why is a stopped chamfer not a stopped arris? I guess I'm asking is it a verb or a noun?

MA, the word "arris" actually means a sharp corner:

Architecture
noun: arris; plural noun: arrises

a sharp edge formed by the meeting of two flat or curved surfaces.

Origin
late 17th century: alteration of early modern French areste ‘sharp ridge’, earlier form of arête.

It's a classic case of word corruption. Taking the corner (arris) off would be "de-arrising", but that's too much for everyday speech, so the "de" has long been dispensed with, and nowadays, "arrising" a corner means taking the sharp edge off. Just one of many words that are used far from their original sense...

Cheers,

**Mountain Ash** · 15th August 2020, 02:49 PM

Rob and Ian.....this is why I love this forum!!!

**Mountain Ash** · 15th August 2020, 03:03 PM

Hi Adam. Thank you and that's very flaterring. I would have to get on top of the WIP photos

**banjopicks** · 2nd October 2020, 01:24 AM

Beautiful work and im really glad to see this. I'm considering going down this path as well. You'll be interrogated when I start.

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**Mountain Ash** · 2nd October 2020, 09:55 AM

Hi BP. More than welcome to interrogate. I'm only at the beginning of my journey but with each build the planes get better. The current plane challenge will help us all.

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