What is the best font for v-carving?

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What is the best font for v-carving?

Postby erikwinkler » Tue Feb 25, 2014 7:44 am

I noticed that the v-carving result of letters like an uppercase M do not have sharp angles in the corners, but are made/calculated round.
Are there any standard fonts where the deep carved lines of letter-corners of letters like M,N,K etc. are nice angular and sharp?
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Re: What is the best font for v-carving?

Postby PaulRowntree » Tue Feb 25, 2014 7:51 am

Hi Erik!
Are you getting square corners for simple shapes like rectangles etc? What do the corners of a font like Times New Roman look like ? Can you send a photo showing the problem?

V-carving is very sensitive to the quality of the bit, the true angle of the cutter, the accuracy of the Z=surface setting, and the stiffness of the machine. Rounded corners sounds like a cutting problems, not a design issue.
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Re: What is the best font for v-carving?

Postby Adrian » Tue Feb 25, 2014 10:12 am

Do you mean the inside corners of the letters or the outside edge? If it's the outside edges then Paul is on the right track.

If it's the inside edges then that's the way VCarving has to work with a round cutter to achieve the outside edge angles.
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Re: What is the best font for v-carving?

Postby Rcnewcomb » Tue Feb 25, 2014 5:50 pm

How does it look in the preview? You can zoom in on the preview to look closely at detail.

TestZoom.png


If it looks sharp in the preview then you are dealing with mechanical issues such as a bit that doesn't come to a true point, or a machine that is rounding corners.

Try a Times Roman font such as the one used in this test file.
Attachments
Test.crv
(165.5 KiB) Downloaded 235 times
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Re: What is the best font for v-carving?

Postby erikwinkler » Wed Feb 26, 2014 6:56 am

Let me first thank you for your replies.
The round inline corners are what i see in the preview.
The T like in the word 'Tes' is beautifull but somehow I get none perfect 90 degree lines.
Just can not figure out what I did wrong.
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Re: What is the best font for v-carving?

Postby Mike E » Fri Feb 28, 2014 4:29 pm

erikwinkler wrote:Let me first thank you for your replies.
The round inline corners are what i see in the preview.
The T like in the word 'Tes' is beautifull but somehow I get none perfect 90 degree lines.
Just can not figure out what I did wrong.


Could you post a example of your CRV file?

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Re: What is the best font for v-carving?

Postby erikwinkler » Fri Feb 28, 2014 8:02 pm

Hello Mike,
I typed this text in Aspire using normal Times New Roman font.

The red circles show how the toolpath makes round corners out of perfect angled corners.
1.jpg


Here you can see that the v-carve bit of 90 degrees does not make perfect square angles as like one would when handcarving.
2.jpg

Is there any way to concur this beauty 'mistake'?
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Re: What is the best font for v-carving?

Postby Adrian » Fri Feb 28, 2014 9:28 pm

As I said in my earlier post that's how VCarving works. With hand carving you're not using a round tool to produce the effect so you won't get the same results.
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Re: What is the best font for v-carving?

Postby FixitMike » Sat Mar 01, 2014 12:40 am

This is not a mistake. The VCarve method raises the cutter at the sharp corners so the outline of the letter is sharp. There is no way to achieve what you want except with possibly a very small diameter cutter, say 1/16" doing a pocket cut, and then you will have a 1/32" radius. You cannot get a corner that is sharper than the end of the cutter. Only V bits have sharp ends, and they must be raised to put that sharp point into the corners.
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Re: What is the best font for v-carving?

Postby erikwinkler » Sat Mar 01, 2014 4:23 pm

Ok thank you for clearing that up.
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Re: What is the best font for v-carving?

Postby nikonwalker » Tue Apr 03, 2018 8:15 am

Pardon my stupidity but what makes the v bit raise to give this sharp point , when i do Times Roman the bit stays at the same z height and get round so called points.
I read the post but still dont understand what I need to do to get these sharp points
Thank you
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Re: What is the best font for v-carving?

Postby Adrian » Tue Apr 03, 2018 8:52 am

nikonwalker wrote:Pardon my stupidity but what makes the v bit raise to give this sharp point , when i do Times Roman the bit stays at the same z height and get round so called points.
I read the post but still dont understand what I need to do to get these sharp points
Thank you


Are you definitely using a V-Carve toolpath and not a profile toolpath?
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Re: What is the best font for v-carving?

Postby nikonwalker » Tue Apr 03, 2018 11:00 am

Adrian
Many thanks , your comment has made it all so clear now , I have only been CNCing with Vectric for 4 months and its been a huge learning experience, learning little things every week, again thanks for the comment
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Re: What is the best font for v-carving?

Postby adze_cnc » Tue Apr 03, 2018 5:04 pm

erikwinkler,

I've seens this question on these forums a few times before.

To elaborate on what Adrian mentioned, the v-carve/engraving toolpath wants to keep the router bit in contact with two vectors at any given time. This has the drawback of cutting too deep in some areas of text. Note the crossbar for the "A". To the get the results you want it would have to ride on one vector for a small amount of time.

If you truly want a more carved-like appearance you'll have to do quite a bit of vector editing. Attached are two images and a v-carve sample file used to create the images.

There are four layers and four toopaths. The layer "regular v-carve" (currently hidden) goes with toolpath "regular v-carve 90deg" and the three "cut" layers go with there corresponding "[cut]" toolpaths.

Hope this helps in some way,
Steven

regular_v-carve.jpg
Regular v-carve toolpath with "rounded" areas

hand_carved_simulation.jpg
A more natural carved look (top of A and N not quite right) at the expense of much vector manipulation

white man - test.crv
Sample CRV used to produce images
(320.5 KiB) Downloaded 33 times
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