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Post by Deleted on Mar 1, 2014 4:57:20 GMT -8
Seen some on ebay but they are way too pricey.
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Post by oliverman on Mar 3, 2014 10:01:37 GMT -8
There is no doctoring of a photo other than making it grayscale to carve a lithophane. Oliver actually sells a 6 pack of 12" x 12" x 5mm tan colored transparent acrylic which works real well although there are guys on Ebay selling acrylic and corian. One trick is to use the INVERT button in i-Picture. This will reverse the depth of cut according to grayscale. Normally, the darker the shade the deeper the cut but you can use the INVERT button to do the opposite which depending on what you are trying to achieve, can help.
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Post by Deleted on Mar 3, 2014 10:27:04 GMT -8
I did mine with no alterations to the image and cut at 2 mm deep, and yes inverted in I-picture. I plan on cutting a piece that is not inverted to use it sort of like a cameo insert for a small keepsake type box I am building.
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Post by newbie on Mar 3, 2014 20:12:15 GMT -8
I don't do acrylic yet but would the acrylic for lay in ceiling lighting work? They have a wide variety and a 2ftx4ft sheet run between $10.00 and $30.00 depending on pattern and thickness.
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Post by Deleted on Mar 4, 2014 4:29:51 GMT -8
Newbie - I believe they'd work on applications to diffuse the light behind an acrylic carving. I'm not too sure they'd work as the material to carve in, since these are designed to spread light waves out evenly and I'm not sure the pattern carved directly into them would look clear afterward.
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Post by Deleted on Mar 27, 2014 15:49:06 GMT -8
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Post by Deleted on Mar 27, 2014 16:19:18 GMT -8
That is the same store I bought the corian from on ebay, saw the light panels and thought that the $ 29.00 + 4.95 shipping to be a bit steep.
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Post by Deleted on Mar 31, 2014 15:40:44 GMT -8
Bob, how do you cut the corian to shape? I've never worked with it before, and I see that the insert you made is rounded so you had to cut/sand it somehow. I'm in contact with a local amish counter top company that I'm hoping to pick up some scrap from.
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Post by Deleted on Apr 1, 2014 4:24:46 GMT -8
I have an 18" table top scroll saw that I use to cut round and irregular shapes with and just use the regular blades that I use for wood. I'm sure it wears on them more than wood. Corian makers say to use carbide tip cutting tools but I suspect they are cutting much thicker pieces than the 1/4" I have. I just sanded the edges with 240 grit sand paper.
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Post by Deleted on Apr 2, 2014 14:20:20 GMT -8
That National Park Service logo you did is exceptional, was that a spec piece or just something you decided to do?
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Post by Deleted on Apr 4, 2014 7:19:14 GMT -8
The Park service piece was a special order I got from the craft show I did in Oct 2013, a christmas gift for someones daughter who is a park ranger.
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Post by Deleted on Apr 6, 2014 11:32:06 GMT -8
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Post by Deleted on Apr 12, 2014 3:14:01 GMT -8
Thanks Rick, the 15.00 price for these is a bit more reasonable.
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Post by Deleted on Jan 13, 2015 12:01:14 GMT -8
Ready to start trying something new for my winter project, and I'm thinking of using some cast acrylic in 1/2" size to carve a Santa/Sleigh/Reindeer scene and then try edge lighting in a stand to finish it up. Has anyone had any experience in doing this - like approximately what depth I should carve to, good source for led light strips, etc. I see that cast acrylic is a little pricey ($21 including shipping on ebay for a 16 x 8 inch piece) so I'd like to get it right the first time. Any input would be appreciated, here's what I plan on carving which is a famous display in my hometown:  I have already converted it to grayscale, would carve it inverted, and added a little blur to round off edges. |
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Post by Deleted on Aug 4, 2015 4:17:49 GMT -8
In most cases you will want to choose to invert on the I-Picture settings, this changes the way the program "sees" your picture:  Without inverting, you picture will come out looking like a negative like this:  However if you invert in I-Picture the program "sees" your pic the way shown in pic #2. Now remember that white is highest and dark is lowest, so areas like the hair if carved without inverting would carve deeper thus allowing more light thru and making the hair appear to be white. By inverting, the hair would be seen as white and therefore carved at a higher setting allowing less light thru and making it appear dark as in the original picture.. Now I have used the horizontal flip tool in GIMP and flipped the pic:  Now after the pic is carved, it can be turned backwards so the smooth side is out and you picture will be oriented the same as the original. |
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