Intro - pantagraph routing - Router Forums
 
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post #1 of 8 (permalink) Old 12-31-2009, 07:18 PM Thread Starter
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Default Intro - pantagraph routing

Hi Folks,
My name's Dave and I came across this site while searching for info on panatagraph routing. If the note looks familiar, my apologies - I typed my intro note and clicked "Post" and the note promptly disappeared...so, doing it all over again but never know if the first one will show up eventually.
I'm planning to make a number of elephant-head corbels to place under beams and I'm thinking I could save a few years of work if I could replicate originals on a pantagraph. They'll be somewhat stylized, sort of proper proportions in profile (about 12"w x 18" h) but narrower than proper scale in head-on view (more Indian elephant than African). I'm thinking of carving separate left and right profiles in a size that would scale down accordingly on a pantagraph, then laminating with an appropriate thickness in between.
Just gathering info right now, I've never used a pantagraph but am looking for something simple that could handle relief of around 1.5 - 2", wondering if something like the Milescraft 1298 could do the job but have no idea really.
Any suggestions/comments would be sincerely appreciated.
Thanks and Happy New Year to all!
Dave
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post #2 of 8 (permalink) Old 12-31-2009, 07:24 PM
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Greetings and welcome to the router forum. Thank you for joining us and Happy New Year to you and yours.

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post #3 of 8 (permalink) Old 12-31-2009, 07:46 PM
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Hi Dave

The only down fall with pantagraph system you will need a very big pattern of the elephant, it's a 40 to 60% thing, so to say if you have a 10" tall letter pattern you will see about a 4" tall letter from the router bit..


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Originally Posted by zeadlezoo View Post
Hi Folks,
My name's Dave and I came across this site while searching for info on panatagraph routing. If the note looks familiar, my apologies - I typed my intro note and clicked "Post" and the note promptly disappeared...so, doing it all over again but never know if the first one will show up eventually.
I'm planning to make a number of elephant-head corbels to place under beams and I'm thinking I could save a few years of work if I could replicate originals on a pantagraph. They'll be somewhat stylized, sort of proper proportions in profile (about 12"w x 18" h) but narrower than proper scale in head-on view (more Indian elephant than African). I'm thinking of carving separate left and right profiles in a size that would scale down accordingly on a pantagraph, then laminating with an appropriate thickness in between.
Just gathering info right now, I've never used a pantagraph but am looking for something simple that could handle relief of around 1.5 - 2", wondering if something like the Milescraft 1298 could do the job but have no idea really.
Any suggestions/comments would be sincerely appreciated.
Thanks and Happy New Year to all!
Dave



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post #4 of 8 (permalink) Old 01-01-2010, 01:08 PM Thread Starter
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Thanks Bob,
I did contemplate the scaling-down aspect but your putting it in numbers helps. Even if I could get a 50% reduction, I'd need an original to be twice the dimensions of my intended final product, or about 36x24". I guess with a typical benchtop size pantagraph I'd have to shift my original and my stock as I worked, like you would shift a long sign as you routed your letters. What I'm really trying to understand is the the vertical relief capability of these sign-carving type pantagraphs - can they do shape carving to a depth of up to maybe 2"? Also, is there a % reduction in vertical travel equivalent to the reduction in the horizontal movements?
By the way, since I'm new here I don't know the protocols - should I take this discussion out of the "Intro" section and into one of the working sections?
thanks
Dave
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post #5 of 8 (permalink) Old 01-01-2010, 01:47 PM
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This seems a tricky project. As you have mentioned that you would laminate the profiled slices, can you not cut these to shape with a bandsaw, laminate and carve to achiene your intended shape. Produce the patterns/templates, I would use the computer andprinter to scale up/down and print templates, them cut my "slices". Or a job for a 3D router carver.
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post #6 of 8 (permalink) Old 01-01-2010, 02:25 PM Thread Starter
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Thanks Mike. Yes, that's how I would make the first original - after cutting out the rough shape I'll hand-carve the detail and contours on each of the left and right profiles. However I may need as many as 20 of the finished product, so my thought is to reproduce the required number of the original profile "slices" on a pantagraph or some sort of duplication machine. Then I'd laminate each pair to the center section to give it some additional thickness, and carve any final details where they meet. I like your suggestion of using a computer to scale the templates. My real purpose now is to try to understand the limits of the typical sign-carving pantagraph with respect to its ability to carve the contours on the side profiles. They seem fine for cutting letters or patterns to a fixed depth but I'm not sure how they would fare with cutting the various depths of 3-D contours. Does the router move vertically as the stylus follows the contours? I'll only need relief of maybe 1.5".

Dave
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post #7 of 8 (permalink) Old 01-01-2010, 08:49 PM
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Welcome to the RouterForums Dave. Glad to have you with us.




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post #8 of 8 (permalink) Old 01-01-2010, 10:53 PM Thread Starter
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Thanks to all who have greeted my or replied here so far - much appreciated and glad to be aboard! Hope you've all had a great New Year's day!

As I browse through the forums here I'm beginning to think that for my job, even though I'm duplicating only one side of a flat piece of stock, I might do better to get into the sort of carving machines discussed and pictured on the thread at

routerforums.com/jigs-fixtures/18105-duplicating-router.html

instead of the parallelogram-style of sign routing pantagraph.

Dave
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