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Old 01-05-2020, 09:13 AM
Bruce Bruce is offline
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Default Lettering Not Accurate Question

Any suggestions welcomed...
I'm doing Vcarve lettering and not sure why there are deviations on each letter. I've noticed this before but time to figure it out.

All these areas are where the tool path starts for the letter... not sure if there is a slight pressure when the bit hits the board and it pushes it down even though I have it screwed and vacuum is on.

The instance before I was cutting 4x8 sheet of MDF .... 24 individual pieces with lettering on each.. 3 pieces across and 8 down.. the left 8 down were perfect, the other 16 had similar variations that were identical on each so I really don't think it has to do with the bit pushing the material...

Thanks in advance..
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File Type: jpg Brent_Fotor.jpg (91.2 KB, 79 views)
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  #2  
Old 01-05-2020, 09:27 AM
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james mcgrew james mcgrew is offline
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If Identical then post file for us to see, how are you creating text ?
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  #3  
Old 01-05-2020, 10:31 AM
Bruce Bruce is offline
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I'm using the engraving toolpath on Vcarve.

The LSU state cutouts were the first ones I did not long after I got my machine... this was more practice since I'm a newbie on CNC's. Just found it odd that the left row down came out perfect but all others had minor deviations both on the large LSU and the smaller text Tigers.

Thanks!
Attached Images
File Type: jpg IMG_2199.jpg (86.1 KB, 41 views)
File Type: jpg IMG_2200.jpg (79.6 KB, 30 views)
File Type: jpg IMG_2201.jpg (91.2 KB, 32 views)
File Type: jpg IMG_2202.jpg (95.0 KB, 22 views)
Attached Files
File Type: crv LSU Football CutOut REVERSE Name plaque.crv (164.5 KB, 2 views)
File Type: crv LSU-2.crv (952.0 KB, 2 views)
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  #4  
Old 01-05-2020, 04:36 PM
Charlie_L Charlie_L is offline
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Have you tried the V-Carve toolpath? Results would be different.
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Old 01-05-2020, 07:34 PM
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Gary Campbell Gary Campbell is offline
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There appears to be backlash in your machine. Make sure that the belts are adjusted properly and the trans slide plates are moving freely.
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Old 01-06-2020, 06:28 AM
Bruce Bruce is offline
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Thanks for the replies.. I will give a call in today as I have no experience with any type of machine adjustments if there that is an issue...
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  #7  
Old 01-06-2020, 11:16 AM
Jim Becker Jim Becker is offline
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I agree with Gary...I had a similar issue with my Stinger II SR-44 not long after delivery and found some looseness in the belt for the X-axis and later similar for the right side on the y axis. It was just enough to affect "round" and so forth visibly...in a frustrating way.
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  #8  
Old 01-06-2020, 06:08 PM
Bruce Bruce is offline
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As far as we have determined, it was the tension spring that holds the x axis gear tight against the rail track... it had good tension on the left side of the gantry, not quite as much on the right side but hardly any in the center and that's the area that I was having the problem.

Again, I appreciate the responses. I read the forum's new post EVERY DAY and it is a tremendous help in many areas. Thanks for you all that take the time to assist with questions and give advise, hopefully one day I can join in and feel confident answering someone's question.
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