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Author Topic: V-Engrave Plugin  (Read 127359 times)
kitwn
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« Reply #255 on: April 10, 2019, 04:39:37 am »

I've just wasted far too much time wondering why V-engrave has suddenly stopped working correctly on my desktop PC. The symptoms were that CamBam carried on 'thinking' indefinately when calculating tool paths if I selected 22.5 degrees as my V angle. The default 90 was fine. I eventually realised that any integer angle was OK but the added .5 caused all the trouble.

The only change I could think of was that I'd recently changed my default postprocessor from 'default' which is what it has been for all the years I've used CamBam to 'LunuxCNC' which is what has driven my router without any trouble for just as long. It seemed like a good idea at the time! Changing it back again solved the problem.

Computers *!?*^%$!!!

Kit
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Bob La Londe
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^ 8.5 pounds on my own hand poured bait.


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« Reply #256 on: July 07, 2019, 17:05:10 pm »

Set your 'max crossover distance' in the engrave MOp to zero. 

Some guys just leave make it zero as their style default, so they never have to check it unless they WANT no-lift crossovers between elements.

Lloyd


Its also an issue with some types of machining including basic text engraving.  Many of my finish styles have max crossover set to zero for this reason. 
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Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
http://www.CNCMOLDS.com
Bob La Londe
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« Reply #257 on: July 07, 2019, 17:28:21 pm »

I am trying to determine some basic guidelines for using the V-Engrave plugin.  For example what tool diameter to use since the diameter varies based on the depth, and the depth should vary based on the space between the lines.  Do you go with tip diameter or shank diameter?  Also, does the V-engrave plugin account for tip diameter or assume V bits are perfectly pointed (which almost none are)?  My plan is to use a 60 degree spot drill with a 1/2" shank. 
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Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
http://www.CNCMOLDS.com
EddyCurrent
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« Reply #258 on: July 07, 2019, 17:41:33 pm »

These are the settings I use for a 60 degree tool, it works well.
The comment is constructed to work with CutViewer simulator.
This is the tool (T108/1/2), https://www.wealdentool.com/acatalog/Online_Catalogue_Engraving_60_Degree_719.html


</ToolDefinition>
<ToolDefinition Name="15.00mm 3 flute V-Cutter 60.00 deg">
<Index>130</Index>
<Diameter>15</Diameter>
<ToolProfile>VCutter</ToolProfile>
<Flutes>3</Flutes>
<FluteLength>13</FluteLength>
<Length>72</Length>
<ShankDiameter>12.7</ShankDiameter>
<HelixAngle>0</HelixAngle>
<VeeAngle>60</VeeAngle>
<MaxRampAngle>0</MaxRampAngle>
<ToothLoad>0</ToothLoad>
<AxialDepthOfCut>0</AxialDepthOfCut>
<RadialDepthOfCut>0</RadialDepthOfCut>
<Comment>{$comment} Tool: {$tool.index} D={$tool.diameter}mm - {$tool.profile} L={$tool.length}mm Ang={$tool.veeangle}°{$endcomment}
{$comment} TOOL/CHAMFER,{$tool.diameter},{$tool.veeangle},{$tool.length}{$endcomment}
{$comment} COLOR,139,69,19 {$endcomment}</Comment>

I think the plugin assumes a perfect point.
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