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Author Topic: Suggestion for Engraving  (Read 73415 times)
EL34
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« Reply #15 on: September 08, 2007, 12:27:03 pm »

I engraved some text in wood yesterday using the windows Comic Sam MS font.
The letters are not sticks, they each have an inside region

Engraving with a 0.03125" ball end endmill and an engraving mop did not look right.
It just engraved the outer profile and inner profile of each letter and left a fuzzy center region untouched

I ended up doing a profile mop as Walt did and the results were great.

My text was .75" tall and the bit was a .0625" 2 flute endmill.

It ended up machining the entire center region of each letter and it looked great.

This wasn't really engraving, it was more like machining out pockets for each letter without creating a bunch of pocket mop's.
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stratcat50
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« Reply #16 on: December 09, 2007, 06:49:50 am »

Here's a suggestion:
Download & install DeskEngrave.Exe from www.Deskam.com.

Now the Stick40 font is installed in the system.
The font works and looks fine in CamBam but appears at first to
not work in Corel Draw. Here's what I did to make it work:

In Corel Draw,
Enter the text in Stick40 font.
You might not be able to see the actual text. Just funny outlines, etc.
(Months ago, I tried Stick40 in Corel Draw and when it looked weird,
I stopped using it. This works.)
Select all text (triple-click).
Fill>None
Outline>Hairline
Arrange>Break Artistic Text Apart
Now the text should be visible. Each word will be separate from the rest.
Select all of the text blocks with the main cursor..
Arrange>Group
Now they can be moved, etc. as a unit.

You might want to copy %WINDIR%\Fonts\STICK40.TTF to another location
for re-installation if you uninstall DeskEngrave or your disk crashes.

I've not tried this font in any programs other than CamBam and Corel. YMMV

Emory
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ChrisB
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« Reply #17 on: January 16, 2008, 20:00:59 pm »

I have always admired stone cut incised lettering. I like the V cuts and how they miter together at the seriffs and intersections.
Just for fun here's a video of some stone cutters. These guys are really masters at their craft.
http://www.youtube.com/watch?v=cUEwL00UbdM
http://www.youtube.com/watch?v=Xvv-v5PRQEc&feature=related

In order to do that on a CNC you need a V bit. You cut right down the center of the letter. The trick is that the deeper you go in Z the wider the stroke on the surface. Then there's the issue of round ends cut with a spinning bit. You can cut a miter line by following the line down in Z with the tip of the bit.
With a V cutter, if the lines of the font, ie; inside and outside, are parallel then your Z depth stays the same. But if the stroke is varying (not parallel), then your Z depth needs to change.

What Walt has done is follow the inside line of the letter with a V cutter at a consistent depth. He couldn't go any deeper than the stroke is wide at it's narrowest. (45? cutter, for a 60? cutter the math is different)
If you look close at his letters there is a single line where the font is narrow and a double line where it is wider.

I would like to be able to carve letters and have been trying to layout some in CAD with a variable Z depth. It's tedious though with a lot of calculation at every point.

Walt, your lettering does look good.

Chris
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duzallcnc1
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« Reply #18 on: August 27, 2008, 17:49:18 pm »

Hi,
   I am new to CamBam. I haven't been able to figure out what a MOP is? Method of Posting for Gcode? This thread talks about an inner and outer MOP? and then saving it as a template. Can a template function as a script does?

Thanks
Sean
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P.Passuello
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« Reply #19 on: August 28, 2008, 13:08:03 pm »

Hi,
   I am new to CamBam. I haven't been able to figure out what a MOP is? Method of Posting for Gcode? This thread talks about an inner and outer MOP? and then saving it as a template. Can a template function as a script does?

Thanks
Sean

MOP stands for Machine Operation and is basically the parameters of the cut you want to make. ie the tool size, cut depth, inside or outside cut, holding tabs, feed rates and many other parameters. The MOP may be saved as a template and give a name of your choosing eg 0.25 cutter. You can apply the template to the MOP and save yourself a lot of work. When you select to do a profile, pocket, engrave etc the parameters that appear on the left hand side of the screen is the MOP. If you are doing a profile you can select either inside or outside and this will determine if the cutter will run inside or outside of your profile.

Below is a question I asked about some features I wanted to see included only to find they were already there. Andy's post (post 2) talks about how to use templates.
http://www.cambam.co.uk/forum/index.php/topic,105.msg640.html



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Jeff_Birt
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« Reply #20 on: July 06, 2009, 18:44:27 pm »

I would LOVE to have true centerline in CamBam. It would cut the machining time in half.

It would also be nice to be able to select between centerline with constant depth and centerline with adaptive depth (deeper for wider parts of stroke.)

With the hints in this thread I have been able to make some nice 'centerline' looking engravings for my end panels though.
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10bulls
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« Reply #21 on: July 07, 2009, 01:08:30 am »

There have been a lot of requests for this and it is defintely something I am keen to investigate.
However, it is not a trivial problem so I would not like to put any timescales on this at the moment.
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CamBamBam
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« Reply #22 on: May 08, 2010, 18:58:50 pm »

Can someone tell me what MOP is
Thanks
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CamBamBam
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« Reply #23 on: May 08, 2010, 23:28:28 pm »

Hi Folks
I have read the tutorial about Copy MOP To Template
I understand it now
Thanks to Hans_G
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CamBamBam
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« Reply #24 on: May 09, 2010, 13:42:12 pm »

I notice that in Cambam there isnt the option to choose fonts
Can someone tell me how it is possible to get different fonts
Thanks
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Jeff_Birt
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« Reply #25 on: May 09, 2010, 14:49:26 pm »

Select the text and look in the MOP (properties box on the lower left side) you change the font there.
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CamBamBam
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« Reply #26 on: May 09, 2010, 19:53:16 pm »

Hi Jeff_Birt
Thanks for your help
I dont see that on my screen
I have the free version of cambam
Is that why or am I doing something wrong
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CamBamBam
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« Reply #27 on: May 09, 2010, 20:01:19 pm »

I just noticed custome MOP footer and header
Do I have to upload fonts over there
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c.sitas
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« Reply #28 on: May 10, 2010, 00:28:02 am »

Hello  Cambambam;     As long as your puzzled ,Open cambam and just hit the draw button. Then select "text". Type in anything for  practice. A screen will pop out and have you postion the text. Once you do this watch oin the left side of the screen. You'll see different commands and among them is the option to select the Fonts. Just click on the word font and a little arrow pops out. Click the arrow and you are on your way. You can control almost anything to do with the text. Size, char space and so on.  c.sitas
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CamBamBam
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« Reply #29 on: May 10, 2010, 01:22:41 am »

Hi c.sitas
Your post was really helpful
Thanks very much
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