SS Panel Clamps

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larryhrockisland
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Re: SS Panel Clamps

Post by larryhrockisland »

BuckeyeDennis wrote: Sun Jan 09, 2022 1:55 pm
  • Start with a straight edge on an MDF template.
  • Use trig and a spreadsheet (or a CAD system) to calculate arc offsets from the straight edge. Generating an offset calculation every few inches along the straight edge.
  • Use calipers to lay out the offset points on the template.
  • Bandsaw and sand the template smoothly to the arc points.
  • Use the template with a router and a pattern bit to transfer the curve to the actual cauls.
This might be easier and quicker. Stumpy Nubs starting at 4:15 minutes
https://youtu.be/KdeUBuCOBBQ

There are lots of other videos out there, this was pretty easy to find, I still like messing with CAD though.
Larry Hargrove
Rock Island, Ok
1981 Mark V 500>510>520(98922)
19?? Mark V 500>Power Pro headstock 556176 06-17-11 factory exchange program original serial unknown
1957 Mark V 500 (350389)
1953 10ER
Another 10ER
Bandsaw 2012 Jointer 2012
Bandsaw, Jointer, other goodies
Craftsman table saw, Delta 46-460 Midi lathe
SS 6” Belt Sander w/power stand 1970’s?
larryhrockisland
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Posts: 241
Joined: Sun Aug 19, 2007 10:47 pm

Re: SS Panel Clamps

Post by larryhrockisland »

KCollins wrote: Sun Jan 09, 2022 4:04 pm
larryhrockisland wrote: Sun Jan 09, 2022 1:31 pm
KCollins wrote: Sun Jan 09, 2022 11:33 am Are these still needed?

Overall - 1-1/8" X 2 X 41
At the Crank End there is a recess narrowing the end to 1-5/8" for 2-3/4" - I can provide a picture if you'd like.
The holes are cut in half and are 1/2" in diameter.
On both ends there are 2 half holes that are 3-1/4 and 4-1/4" from the end.
The remaining half holes are from the end 6-1/2", 8-3/4", 11",13-1/4",15-1/2",17-3/4", 20", 22-1/4".
Thanks KCollins. Can you check the dimension on end opposite the crank end? I think it will be 1-7/8" based on Dennis and JPG's information.
I come up with 2" on the money.
I'm confused :confused: I had thought you were 2" tall in the center and would taper down to the end. Did it start at 2 and get taller. I guess another question is did SS start with a common end dimension of 2" and the rise dimension changes with the length of the caul, 2' vs 3' vs 4'?
Larry Hargrove
Rock Island, Ok
1981 Mark V 500>510>520(98922)
19?? Mark V 500>Power Pro headstock 556176 06-17-11 factory exchange program original serial unknown
1957 Mark V 500 (350389)
1953 10ER
Another 10ER
Bandsaw 2012 Jointer 2012
Bandsaw, Jointer, other goodies
Craftsman table saw, Delta 46-460 Midi lathe
SS 6” Belt Sander w/power stand 1970’s?
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algale
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Joined: Thu Nov 04, 2010 8:13 am

Re: SS Panel Clamps

Post by algale »

larryhrockisland wrote: Sun Jan 09, 2022 4:14 pm
BuckeyeDennis wrote: Sun Jan 09, 2022 1:55 pm
  • Start with a straight edge on an MDF template.
  • Use trig and a spreadsheet (or a CAD system) to calculate arc offsets from the straight edge. Generating an offset calculation every few inches along the straight edge.
  • Use calipers to lay out the offset points on the template.
  • Bandsaw and sand the template smoothly to the arc points.
  • Use the template with a router and a pattern bit to transfer the curve to the actual cauls.
This might be easier and quicker. Stumpy Nubs starting at 4:15 minutes
https://youtu.be/KdeUBuCOBBQ

There are lots of other videos out there, this was pretty easy to find, I still like messing with CAD though.
Yep, that's almost certainly closer to the way they created the originals ones. I just used this technique to draw a fair curve on some canoe thwarts. I actually used a metal blade from a bow saw as the "baton" to draw the curve. Nicely flexible and not fussy.

As the owner of (3) of the 36" Shopsmith ones, and given that, if you have the hardware, making extra sets of cauls is relatively trivial, I may try to make a longer and shorter set.
Gale's Law: The bigger the woodworking project, the less the mistakes show in any photo taken far enough away to show the entire project!

larryhrockisland
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Posts: 241
Joined: Sun Aug 19, 2007 10:47 pm

Re: SS Panel Clamps

Post by larryhrockisland »

KCollins, how did your glue up go last Wednesday at the community education class? I should have asked sooner. This was my first time to actually glue up a panel. It is 25-1/8 x 36 x 1-1/6 and came out flat. I am pleased with it and so is my daughter. :)

Some additional info and pics. I used my template drawing for the curves however the oak I had was actual 1-3/8 x 1-3/4 x 34 :o . I fudged the template around and the 3/16 difference was over 34" not 36", so I made a stiffer caul, not that 2" should make that much difference. Next time I'll size my material to my drawing ;)
Double Bar Clamp Cauls-N.T.S.jpg
Double Bar Clamp Cauls-N.T.S.jpg (32.21 KiB) Viewed 1207 times
My template, not to scale here. I liked how readable Dusty's was and tried printing to a jpg.
IMG_2069 (Custom).JPG
IMG_2069 (Custom).JPG (406.69 KiB) Viewed 1207 times
As assembled
IMG_2070 (Custom).JPG
IMG_2070 (Custom).JPG (411.66 KiB) Viewed 1207 times
Could not draw the cauls flat before bending the pressure bar
IMG_2077 (Custom).JPG
IMG_2077 (Custom).JPG (411.03 KiB) Viewed 1207 times
Bent bar, wish they were like the original, would like to shorten and add a solid piece. Suggestions?
IMG_2074 (Custom).JPG
IMG_2074 (Custom).JPG (297.53 KiB) Viewed 1207 times
End
IMG_2075 (Custom).JPG
IMG_2075 (Custom).JPG (374.84 KiB) Viewed 1207 times
Middle
IMG_2076 (Custom).JPG
IMG_2076 (Custom).JPG (379.59 KiB) Viewed 1207 times
Length

I will sand these down to a gentler curve and I will also make a set using the 1/16 per foot rise number. Thanks for everyones input.
Last edited by larryhrockisland on Sun Jan 09, 2022 5:34 pm, edited 1 time in total.
Larry Hargrove
Rock Island, Ok
1981 Mark V 500>510>520(98922)
19?? Mark V 500>Power Pro headstock 556176 06-17-11 factory exchange program original serial unknown
1957 Mark V 500 (350389)
1953 10ER
Another 10ER
Bandsaw 2012 Jointer 2012
Bandsaw, Jointer, other goodies
Craftsman table saw, Delta 46-460 Midi lathe
SS 6” Belt Sander w/power stand 1970’s?
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algale
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Re: SS Panel Clamps

Post by algale »

Yeah, the original hardware is a solid block of metal -- you won't bend that block -- although you may indent it into your panel if you don't use some scrap wood. When I bought mine, they only sold the hardware with the cauls. You chose your length and that was it. I bought three of the 36" length and I wish I had bought four to have the extra set of hardware.
Gale's Law: The bigger the woodworking project, the less the mistakes show in any photo taken far enough away to show the entire project!

larryhrockisland
Gold Member
Posts: 241
Joined: Sun Aug 19, 2007 10:47 pm

Re: SS Panel Clamps

Post by larryhrockisland »

algale wrote: Sun Jan 09, 2022 5:33 pm Yeah, the original hardware is a solid block of metal -- you won't bend that block -- although you may indent it into your panel if you don't use some scrap wood. When I bought mine, they only sold the hardware with the cauls. You chose your length and that was it. I bought three of the 36" length and I wish I had bought four to have the extra set of hardware.
I could also not act like a gorilla. :D They pulled together well plus I had bar and pipe clamps, I just kept cranking trying to get them to flatten out all the way across the panel, also that is a piece of hollow plastic for the cushion on the pressure plate.
Larry Hargrove
Rock Island, Ok
1981 Mark V 500>510>520(98922)
19?? Mark V 500>Power Pro headstock 556176 06-17-11 factory exchange program original serial unknown
1957 Mark V 500 (350389)
1953 10ER
Another 10ER
Bandsaw 2012 Jointer 2012
Bandsaw, Jointer, other goodies
Craftsman table saw, Delta 46-460 Midi lathe
SS 6” Belt Sander w/power stand 1970’s?
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JPG
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Re: SS Panel Clamps

Post by JPG »

How about a thick oak pad replacing the "hollow plastic".
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╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10
E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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JPG
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Re: SS Panel Clamps

Post by JPG »

OK I'll bite.

Whatsa thwart?
╔═══╗
╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10
E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
larryhrockisland
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Posts: 241
Joined: Sun Aug 19, 2007 10:47 pm

Re: SS Panel Clamps

Post by larryhrockisland »

I think that would work. I would shorten the “wings” too, I don’t see a need for the pad to be that long.
Larry Hargrove
Rock Island, Ok
1981 Mark V 500>510>520(98922)
19?? Mark V 500>Power Pro headstock 556176 06-17-11 factory exchange program original serial unknown
1957 Mark V 500 (350389)
1953 10ER
Another 10ER
Bandsaw 2012 Jointer 2012
Bandsaw, Jointer, other goodies
Craftsman table saw, Delta 46-460 Midi lathe
SS 6” Belt Sander w/power stand 1970’s?
larryhrockisland
Gold Member
Posts: 241
Joined: Sun Aug 19, 2007 10:47 pm

Re: SS Panel Clamps

Post by larryhrockisland »

JPG wrote: Sun Jan 09, 2022 6:35 pm OK I'll bite.

Whatsa thwart?
How about “curses, thwarted again” or a brace across a boat. Google to the rescue.
Larry Hargrove
Rock Island, Ok
1981 Mark V 500>510>520(98922)
19?? Mark V 500>Power Pro headstock 556176 06-17-11 factory exchange program original serial unknown
1957 Mark V 500 (350389)
1953 10ER
Another 10ER
Bandsaw 2012 Jointer 2012
Bandsaw, Jointer, other goodies
Craftsman table saw, Delta 46-460 Midi lathe
SS 6” Belt Sander w/power stand 1970’s?
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