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How to cut a long arc

Featured Replies

8 minutes ago, kmealy said:

I'd say we all show up at Cal's shop Saturday morning.   Have the coffee and donuts ready!

Georgia, eh? I can be there in about 20 hours.

John

1 hour ago, kmealy said:

I'd say we all show up at Cal's shop Saturday morning.   Have the coffee and donuts ready!

does mean that Cal has to move the project to coffee shop that makes donuts???

7 hours ago, lew said:

Here's an image of how I do it-

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I have a long piece of straight grained maple- but any wood will work- instead of the nails, I use a couple of clamps as stops. 

That is kind of what I was thinking. I was thinking of using bender board like you use for curved edges when pouring concrete.

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Bottomless cup and never ending supply of donuts!

 

Edited by kmealy

3 hours ago, kmealy said:

I'd say we all show up at Cal's shop Saturday morning.   Have the coffee and donuts ready!

Will someone pick me up at the airport, please and thanks?

Edited by Chips N Dust

  • Author

I hope this doesn't end up like "design by committee"...

Cal

I guess I am missing something. In your first statement you answered your own question. If you can draw a pattern to follow why not use a long board, attach a router with a straight bit to one end and either use a bolt or nail on other end.  And whats wrong with setting things up out side  if you don't have enough room inside to do it? I used a 20 foot 2x6 one time and I had to bolt a piece of metal  to the base of the router then to the 2x6 for my bit was not long enough to go through the wood and have enough bit left to go through the one by I was needing to cut.

  I forgot to add. To keep the long 2x6 from dragging in the middle I attached a swivel caster in the middle with a sheet of plywood for the runway.

Edited by Smallpatch

  • Popular Post
57 minutes ago, clhyer said:

I hope this doesn't end up like "design by committee"...

Cal

no worries...

put chairs, coffee and donuts over in the corner...

nobody will pay you a lick of attention once the BS gets flowing......

14 hours ago, kmealy said:

I'd say we all show up at Cal's shop Saturday morning.   Have the coffee and donuts ready!

 

...and who's gonna do the work...? :)

 

18 minutes ago, Nickp said:

 

...and who's gonna do the work...? :)

 

you...

I've done it about as you described.  A long hunk of lumber with a router on one end and a pin on the other.

 

Use a big pin  like a 1"  greased maple dowel with a hammer fit.

The only weak point is the flex of the long hunk of lumber.  I'd use a 2 x 6 or a 2 x 8 and  sister up a couple   for the length if needed

 

36 minutes ago, Cliff said:

The only weak point is the flex of the long hunk of lumber. 

add a stiffener rib..

11 minutes ago, Stick486 said:

add a stiffener rib..

Be sure to rent a forklift to lift it.

Herb

9 minutes ago, Dadio said:

Be sure to rent a forklift to lift it.

Herb

back to the pattern...

  • Author
  • Popular Post

Well... it is Saturday morning and the coffee is hot.  Donuts & stickybuns are ordered... and it is headed for 70* today!!!

When I got back yesterday I set about getting this phase of the project underway.  I picked up a sheet of mdf and had it ripped in half and back at the ranch puzzled over the logistics a bit.

I finally screwed a couple 1x4's together, used an old gate hinge and clamped it to the bed of my pickup.  And screwed my regular router trammell to the other end.  Used a pencil on cardboard and cut the result for a quick look on the counter.  I like it.  It got dark on me before I got set up for the cut, so that will come this morning.  

After some more coffee and sugar calories...

Cal

 

 

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Way to go, Cal. 

Can you imagine the consternation of passersby ..."look there, Maud. What's Cal up to now?".

Gate hinge... mid-way support... now THAT'S using the old noodle! :)

John

  • Author

Well, Saturday has pretty much come and went.  I guess I will call the Mrs. and tell her she can come home from the airport...

Donuts - got two dozen left...

 

After a trip to Lowes to pick up the Formica sheets I set about getting the top cut.

Everything looked good, but truth be told, the tramell was not up to the job.  It flexed and I was not able to get a good uniform cut.  I settled for using the set-up to draw a new arc and just used the jigsaw and belt sander followed up with the router to get a nice straight face.  MDF sure makes a mess!

I will find out tomorrow when I apply the laminate how good a job it is.

 

On the plus side today, it did get to about 74*.  I think 70 is forecast for tomorrow, although some rain with it.

Cal

 

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Lookin' good, Cal.

My flight got cancelled due to the ice coating....sorry!

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