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• Lynnsay's Prie Dieu #5: Hollows and Rounds

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Blog entry by Ron Aylor posted 03-19-2017 11:24 PM 1322 reads 0 times favorited 9 comments Add to Favorites Watch
« Part 4: Mortise and Tenon Joints Part 5 of • Lynnsay's Prie Dieu series Part 6: Slight Detour »

Hollows and Rounds –
 
I have not had much shop time over the last couple of weeks. Actually I have had no shop time … I’ve been down with the flu! I traveled to Maryland two weeks ago and must have pick up the bug at the airport. I’m thankful I got a flu shot at the end of last year … no telling where I’d be had I not. But at any rate … I’m now back amongst the living!
 
As I mentioned earlier, the horizontal frame members of Lynnsay’s Prie Dieu will receive a bit of sticking. To achieve the sticking, I’ve pulled out a No. 8 round, a No. 10 hollow, a rebate plane, my shop made rebate saw, and just in case, a coffin smoother.
 

 
Hollows and rounds are rather straight forward planes, they have a concave or convex sole and cut either a hollow or round profile. Unlike almost every other plane, hollows and rounds are named by the shape of the plane’s sole, not the profile it creates. So with that said, a hollow has a concave sole, a round has a convex sole. Don’t ask me why. Some hollows and rounds have skewed irons to help with difficult wood and working cross-grain. Picture skewing your bench plane when you tackle a tough board and you’ll see what I mean. British planes are commonly found with skewed irons, American planes less so. Most hollows and rounds cut a 60 degree arc of a circle. The most common numbering scheme for moulding planes is to assign the plane a number based on the radius of the arc it cuts in 16ths of an inch. So using this convention, my No. 8 round cuts an arc with a 1/2 inch radius, and my No. 10 hollow cuts an arc with a 5/8 inch radius.
 
Contrary to popular belief, you don’t really need a lot of moulding planes. You are only limited by your imagination when it comes to the profiles you can create with just one hollow and one round.
 
For this particular project I’m trying to reproduce the profiles found on the original desk on frame. For the horizontal frame members I’ll just be using a hollow to produce something like this …
 

 
... for the lid to the desk, I’ll be using both a hollow and a round …
 

 
Sharpening the irons of these planes is nothing like sharpening other plane irons. Given that the blades were hand made, with the steel being laminated by a blacksmith, the back of the iron is not perfectly flat. So there is no need obsessing about flattening the backs as with other plane irons. I usually just strop the cutting edge of the hollow with a leather wrapped dowel charged with chromium oxide …
 

 
and the cutting edge of the round with a flat leather strop.
 

 
I sharpen the rebate plane iron as I would a chisel or any other plane iron.
 
With highly polished cutting edges …
 
                 
 
.. I made a dry run of the horizontal frame member profile.
 

 
                 
 
Guess what I’ll be doing for the next several days!
 

 
Next up … the completed frame! Thanks for looking … all comments and/or questions welcomed … more to come!
 
 
 
Follow my progress with the links below:
Lynnsay's Prie Dieu #1: Getting the Jump on Lent
Lynnsay's Prie Dieu #2: Replication in a Cold Dark Shop
Lynnsay's Prie Dieu #3: Rip Saw Tune-up and Frame Members
Lynnsay's Prie Dieu #4: Mortise and Tenon Joints
Lynnsay's Prie Dieu #5: Hollows and Rounds
Lynnsay's Prie Dieu #6: Slight Detour
Lynnsay's Prie Dieu #7: All the Single Pieces
Lynnsay's Prie Dieu #8: The Kneeling Platform
Lynnsay's Prie Dieu #9: Mitred Breadboards
Lynnsay's Prie Dieu #10: Dovetails
Lynnsay's Prie Dieu #11: Edge Moulding
Lynnsay's Prie Dieu #12: Three in One
Lynnsay's Prie Dieu #13: It Is Finish

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.



9 comments so far

View Dan Wolfgang's profile

Dan Wolfgang

120 posts in 528 days


#1 posted 03-20-2017 01:08 AM

Nice progress, Ron!

View Ron Aylor's profile

Ron Aylor

1436 posts in 368 days


#2 posted 03-20-2017 01:11 AM



Nice progress, Ron!

- Dan Wolfgang

Thanks, Dan … it’s getting there!

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

View Blackberry's profile

Blackberry

83 posts in 874 days


#3 posted 03-21-2017 10:36 AM

Glad to hear your feeling better. Thanks for the details, it’s coming along nicely.

View Ron Aylor's profile

Ron Aylor

1436 posts in 368 days


#4 posted 03-21-2017 10:57 AM



Glad to hear your feeling better. Thanks for the details, it s coming along nicely.

- Blackberry

Thank you, Blackberry!

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

View Kelster58's profile

Kelster58

298 posts in 261 days


#5 posted 04-08-2017 12:36 AM

You do amazing work….....glad you are recovered from the flu. Our school struggled with 25 inches of snow and some tragedy from the aftermath of the storm. Were getting back to normal here too. I will update my classes on your progress this coming week. My students have been asking for an update. They’ll be happy to see your progress. I know they will be glad to see.

-- K. Stone “Tell me and I forget, teach me and I may remember, involve me and I learn.” ― Benjamin Franklin

View Ron Aylor's profile

Ron Aylor

1436 posts in 368 days


#6 posted 04-08-2017 01:43 PM



You do amazing work….....glad you are recovered from the flu. Our school struggled with 25 inches of snow and some tragedy from the aftermath of the storm. Were getting back to normal here too. I will update my classes on your progress this coming week. My students have been asking for an update. They ll be happy to see your progress. I know they will be glad to see.

- Kelster58

Thank you for the kind words. I pray the tragedy only involved vegetation and building materials and that no one was hurt. Again … I am honored to part of your class. Just last week at church I mentioned how your class followed my Hepplewhite Stand build. I only wish I was closer! Perhaps the next installment will get some laughs.

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

View PPK's profile

PPK

493 posts in 530 days


#7 posted 05-18-2017 07:48 PM

i’m super curious – what’ve you got in your two soup cans that sit on your workbench??? It looks like french fries and a pastry… lol.

-- Pete

View Ron Aylor's profile

Ron Aylor

1436 posts in 368 days


#8 posted 05-19-2017 01:07 AM



i m super curious – what ve you got in your two soup cans that sit on your workbench??? It looks like french fries and a pastry… lol.

- PPK

Too funny! The French fries are spills to light candles, the pastry is an oil wicke for oiling saws and planes.

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

View PPK's profile

PPK

493 posts in 530 days


#9 posted 05-19-2017 01:09 PM

Aha! Thanks. I kept seeing them in your pictures… I figured they must be getting pretty stale…
Great work, btw. I’m in awe of the skills required (that you possess) to do all hand work like this.

-- Pete

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