Does anyone CNC a scroll?


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I know Molnar does, and I am working in that direction.

For me, the major difficulties are:

  1. Making the model.  It's a very complicated form.
  2. Fixturing and indexing to get all 4 sides to match up
  3. Tools to hollow out the pegbox and mill into the throat of the scroll.  There are some long reaches with skinny tools, not the nicest thing.

I'm currently partway thru all of the items, and have not cut a single chip as yet. 

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Just like that Don! :mellow:

Some of the cutter choices were interesting, particularly the conical one.  I’d love to have the scroll in my hands to look at.  I heard a lot of what could be “chatter”, but perhaps the tools are sharp enough for there to not be much of an effect on the finished product.

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3 hours ago, Michael K. said:

This CNC is not really Homade.

But how many Scrolls you carve by your own Hand till all is set-up perfectly to compare?

 

Pretty nice! Can you get those at Harbor Freight? Seriously, who has the money or room for something like that?

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I used to do a bit of CNC work on a 3 axis Haas machine a couple of years ago. mainly prototype models. The CAD models were always super fine in detail from the designer's and we had an ancient version of MasterCAM. It wasn't enjoyable. We had to use these ultra fine 1.5mm milling cutters ( I'm not sure why they made metric cutters) from this US custom tool maker to cut a lot of the radii and there were loads of bloody Fibonacci curves.

I hated it, I much prefer doing things by hand, but I respect the work needed to program something complex like a scroll.

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My Hillbilly CNC carved this viola scroll in just three days! It takes ages to program... mainly to "teach" the machine to use scrapers that work better than those rotatory tools. It makes a mess, but my workshop is already very messy. 

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9 minutes ago, MANFIO said:

My Hillbilly CNC carved this viola scroll in just three days! It takes ages to program... mainly to "teach" the machine to use scrapers that work better than those rotatory tools. It makes a mess, but my workshop is already very messy. 

151623162_10208218196728644_275006711142150958960_10208218196448637_661537219570151797100_10208218196488638_488557348466150443155_10208218196888648_583425308529151057639_10208218195408611_245895378189

 

Beautifully perfect.  Can you introduce some random errors in the cnc so it looks like it was carved by a human being?

"The secret of success is sincerity.  Once you can fake that you've got it made."

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1 hour ago, MANFIO said:

My Hillbilly CNC carved this viola scroll in just three days! It takes ages to program... mainly to "teach" the machine to use scrapers that work better than those rotatory tools. It makes a mess, but my workshop is already very messy. 

 

 

Three days. How long does it take you to carve a scroll by hand? Assuming a regular working day, do you save any time?

 

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Reading comments here, I would suggest to use the CNC as a roughing out device and not to get the scroll completeley finished. If I would imagiine to work from precise sawcuts (made in this case by the CNC machine) which are on both sides exactly the same, the finish shouldn't take much more time than giving a CNC scroll the final touch.

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