Figured I might as well try it. Started to make the bank but after cutting each side I got sidetracked. Jay was spot on with the plaques.
I cut one out of a laminated BB panel Menards had on sale and just polyed over the raw wood. The other was carved on a piece of Corafoam and finished with aluminum paint to look like a metal ingot. Both are approx 12 x 24".
Started the bank but ran into problems. More on that after (or if) I conquer them.
It's an all day affair. I had Aspire set at "very high" detail so it takes a while longer. The wood one had to have a roughing cut first so it took longer. The nice thing about Corafoam is that it takes just one pass and it's done. No chipping, knots, tearout, and minimal sanding (usually none). And no grain, but it paints great.
But each one was basically a morning til suppertime cut. Not fast by any means.
If I only had one to scan. My original CNC Shark Pro has a scan probe that can be used to map a 3D surface. Rarely used it, but when I did scanning coins was one of the things I played with. For some reason I never got worthwhile results trying to scan paper money. :grin:
Scottart had some info on a 3d scanner last year that he was insterested. Wonder if he ever followed up on it or can give us info where to find it.
And..........most importantly, does it work?
You can set how fine of resolution you want the Shark probe to scan at. Basically it can move in steps as fine as the CNC itself can move in. So if the CNC can do .001 inch steps, then you can create a 3D point cloud that fine (and large) of a coin's face. In the same way 3D cutting on a CNC takes a long time, so does 3D scanning. There must be better 3D scanning technology out there that is faster. I know there is an app for smartphones that can build a 3D model from several photos you take around an object. Not sure if it would get much detail off a small coin though.
I have used 123d Catch, free to use from AutoDesk, to make 3d models. You take pictures of an object from many different angles and send the pictures to the cloud. You get back a 3d model. There is some cleanup that is needed sometimes but they provide free programs to do that too. You can get a really good model if you take enough pictures. I have had a couple comeback that did not need any repair but if they need repair it is not too bad. The better the pictures the better the model you get.
Started the bank again. Cut the first Indian and buffalo out (all day job) only to have the lip of the coin tear out because I used the 1/4 end mill called for in the plan. I cut them again and profiled with a 1/8" straight end mill and it worked. Cut the spacers and stand from another piece and ready to finish sand and paint.
Stand is cut from 2 pieces (holes lined them up perfect) glued together.
Put spacers in. Filled and started sanding.
How it'll look before finishing
Used a piece of 1 x 12 x 48 BB panel for everything. Measures over 10" across.
Ain't perfect, nothing I do ever is, but will send this off to the grandson. Measures 11 inches high by just over 10 inches wide. Will only make these for gifts and special occasions, cause I'd never sell them for what I'd have to get for them without setting up a production system.
Ain't perfect, nothing I do ever is, but will send this off to the grandson. Measures 11 inches high by just over 10 inches wide. Will only make these for gifts and special occasions, cause I'd never sell them for what I'd have to get for them without setting up a production system.
As a gift for kids it makes me think about doing their face from a photo in 3D on one side of the bank. Dress it up so it still looks like an official coin.
John that's the coolest piggy bank ever . Love the outcome and really like 4D's idea with a facial scan of the kids face . That would certainly be a seller
That's 15# Corafoam painted silver in the opening post. The bank is painted 5/8" Baltic Birch glued up scrap to make a panel. It really really painted well.
The rest of the coins would be nice if I could talk somebody in to making the files. Hint hint MEBCWD!!!!
Great job, HJ! It looks fantastic! I gave away the last one I made so I'm going to make one to keep out of those same baltic birch panels you used. They seem to cut very nice. I'm going to try cutting against the grain this time to see if I get less fuzzies. I contacted Michael Tyler, the designer of the nickel bank and he said he is working on a similar bank with an Indian Head penny design. Hope it's another free project!
Can anyone out there get me the .stl file of the Indian head nickel? I have a project that I would like to use it on.
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