How I make Oval lithophanes

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calgrdnr
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Re: How I make Oval lithophanes

Post by calgrdnr »

Sorry grease didn't answer your question .. I have seen some nice lithos that were cut with 60 degree. I have used 45 degrees but prefer the 30 I think better resolution ...

Kent

calgrdnr
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Re: How I make Oval lithophanes

Post by calgrdnr »

Here is a sample of 45 vs 30 degree. The eagle on the left 45 degree right 30

http://www.vectric.com/WebSite/Vectric/ ... carve2.htm


Better picture http://www.vectric.com/forum/download/f ... &mode=view

Kent

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ManitobaKeith
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Re: How I make Oval lithophanes

Post by ManitobaKeith »

Yes Kent,
that 30 degree is much better although, they both look great.
Will have to order a 30 º one.
Keith
It is not only what we do,but also what we do not do,for which we are accountable-Jean Moliere

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Greasetattoo
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Re: How I make Oval lithophanes

Post by Greasetattoo »

Hey guys...

Well, I think I have it figured out...
It all came back to me.

Thanks, Kent, for the .21 tip.
That really helps with the contrast and all.

The ones attached are done with a .125 Ball for roughing 35% stepover
and a .03125 Ball for finish. (cone bit). 15% stepover

Can't wait to get my 30degree bits.
(broke my other).

But, I think these turned out quite well!

I have a litho cutting as I type.
A very interesting one, which I will post, when it is done.

I don't think it has ever been done before.
(if it works)
Stay tuned......
Attachments
litho movie.gif

calgrdnr
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Re: How I make Oval lithophanes

Post by calgrdnr »

You are now officially hooked..... nice please explain how you made the gif movie
that is to cool look forward to seeing your creations I am sure we will be impressed
Kent

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Re: How I make Oval lithophanes

Post by Stickman »

I've broken a (relatively) expensive .031" bit. On the other hand, I bought a set of 10 Chinese needle-tip bits on Ebay for $10 a few years ago and they've held up great. After doing a lithophane in corian (15+ hours) I can still use the bit for further work. I think I've actually only broken one, still have half unused.

calgrdnr
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Re: How I make Oval lithophanes

Post by calgrdnr »

3 yr's 5 months later I am still using original bits. Yes tip broke but still smaller then the 0.03 I tell software it is . If I had to guess I would say each bit has 200+ hours on each . when shaving 0.003 in corian doesn't wear the bit at all that I can tell...I am sure it does.

and in fairness to the manufacture of my bits they all broke when plunging 0.21 inches first cut. I run aggressive Z :)

Stickman
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Re: How I make Oval lithophanes

Post by Stickman »

I can tell the bit I've been using is dulled a bit, but I still wouldn't touch the tip carelessly with a finger. I'll second those aggressive cuts. I go .21 in corian, and there's no preliminary rough cut. I learned everything I know about lithophanes on this forum. :D

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Re: How I make Oval lithophanes

Post by wjfiles »

My 2 cents worth.
Look for Tapered Ball Nose Cutters they are good were no rough cut is used.
WJF

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