Author Topic: Missing starting part, with Makeblock LaserBot  (Read 2927 times)

ivo

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Missing starting part, with Makeblock LaserBot
« on: August 24, 2018, 05:13:05 AM »
The first 1 3 mm of many drawingobjects are often not cut/burned.
The result is different each time.

See attached example with test-text and test squares.
Config:  Speed: 600 mm/min, 90% power of 1.6 W laser

The active laser does pass over this first 1 3 mm (so, no BCL-bug), but I see no burning at all on this first 1 3 mm.
I suspect that the laser needs more time to output full power.

Are there any workarounds to overcome this problem ?

My best solution at this time: set the repeat time minimal to '2'.
The laser has no problem with the second writing if begin- and end-point are the same. (circle for example)
But the beginning 1 3 mm is cut/burned only once, the rest twice.

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Re: Missing starting part, with Makeblock LaserBot
« Reply #1 on: August 24, 2018, 08:09:00 AM »
Can you post the g-code?
Admin -- Ralph -- ralphfreshour at gmail com
https://www.dropbox.com/s/qv1qee2vb65785t/SetupBenCutLaser3.2a.zip?dl=0
BCL Paid license: $49.95
via Paypal to ralphfreshour at gmail com

ivo

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Re: Missing starting part, with Makeblock LaserBot
« Reply #2 on: August 24, 2018, 01:29:54 PM »
Here is the g-code of the squares and the text.

The squares are made with the BCL testtool:

G91
G21
G01 Z0000.0000 F100
G01 X0000.0000 Y0000.0000 F600
M4 P230
G01 X0000.0000 Y0010.0000 F600
G01 X0010.0000 Y0000.0000 F600
G01 X0000.0000 Y-0010.0000 F600
G01 X-0010.0000 Y0000.0000 F600 ( pass 1 )
M4 P0
G01 X0012.0000 Y0000.0000 F600
M30



The G-code of the "Kerst" (Meaning Christmas in Dutch)

G90
G21
G10 L20 P1 X0 Y0 Z0
G01 X000.0000 Y000.0000 F1000
G01 Z0000.0000 F100

( Body )
G01 X0138.2998 Y0001.8541 F1000
M4 P230 ( [color:ForestGreen] )
G01 X0133.8591 Y0009.1688 F600
G01 X0130.7853 Y0009.1688 F600
G01 X0130.7853 Y0002.1831 F600
G01 X0129.1400 Y0002.1831 F600
G01 X0129.1400 Y0017.3805 F600
G01 X0135.6748 Y0017.3805 F600
G01 X0137.8514 Y0016.6225 F600
G01 X0138.7193 Y0015.7426 F600
G01 X0139.4869 Y0014.1266 F600
G01 X0139.4869 Y0012.4204 F600
G01 X0138.7193 Y0010.8141 F600
G01 X0137.8514 Y0009.9268 F600
G01 X0135.7944 Y0009.2078 F600
G01 X0139.7356 Y0002.7316 F600
G01 X0138.2998 Y0001.8541 F600
M4 P0
( end Polyline 0026 )  ( UserComment )  ( polyline 0026 )

G01 X0108.4778 Y0001.7639 F1000
M4 P230 ( [color:ForestGreen] )
G01 X0103.0206 Y0009.3662 F600
G01 X0100.8341 Y0007.0921 F600
G01 X0100.8341 Y0002.1831 F600
G01 X0099.1888 Y0002.1831 F600
G01 X0099.1888 Y0017.2392 F600
G01 X0100.8341 Y0017.2392 F600
G01 X0100.8341 Y0009.5174 F600
G01 X0108.5875 Y0017.6389 F600
G01 X0109.7746 Y0016.4031 F600
G01 X0104.2173 Y0010.5947 F600
G01 X0109.7453 Y0002.8802 F600
G01 X0108.4778 Y0001.7639 F600
M4 P0
( end Polyline 0027 )  ( UserComment )  ( polyline 0027 )

G01 X0162.9325 Y0002.1929 F1000
M4 P230 ( [color:ForestGreen] )
G01 X0161.2872 Y0002.1929 F600
G01 X0161.2872 Y0015.6524 F600
G01 X0157.1046 Y0015.6524 F600
G01 X0157.1046 Y0017.3805 F600
G01 X0167.1225 Y0017.3805 F600
G01 X0167.1225 Y0015.6524 F600
G01 X0162.9325 Y0015.6524 F600
G01 X0162.9325 Y0002.1929 F600
M4 P0
( end Polyline 0028 )  ( UserComment )  ( polyline 0028 )

G01 X0150.9624 Y0002.0345 F1000
M4 P230 ( [color:ForestGreen] )
G01 X0148.2203 Y0002.0345 F600
G01 X0146.0437 Y0002.7925 F600
G01 X0144.1789 Y0004.7180 F600
G01 X0145.3466 Y0005.9855 F600
G01 X0146.9429 Y0004.2891 F600
G01 X0148.4884 Y0003.7602 F600
G01 X0150.7038 Y0003.7602 F600
G01 X0152.2494 Y0004.2891 F600
G01 X0153.1073 Y0005.1958 F600
G01 X0153.1073 Y0006.5827 F600
G01 X0152.6392 Y0007.5723 F600
G01 X0152.2007 Y0008.0208 F600
G01 X0151.1332 Y0008.5985 F600
G01 X0147.4209 Y0009.8854 F600
G01 X0145.9950 Y0010.6142 F600
G01 X0145.1758 Y0011.4722 F600
G01 X0144.4180 Y0013.0687 F600
G01 X0144.4180 Y0014.9260 F600
G01 X0146.0437 Y0016.6225 F600
G01 X0148.2203 Y0017.3805 F600
G01 X0150.9624 Y0017.3805 F600
G01 X0153.1391 Y0016.6225 F600
G01 X0155.0233 Y0014.6847 F600
G01 X0153.8263 Y0013.4392 F600
G01 X0152.2494 Y0015.1259 F600
G01 X0150.7038 Y0015.6524 F600
G01 X0148.4884 Y0015.6524 F600
G01 X0146.9309 Y0015.1259 F600
G01 X0146.0729 Y0014.2167 F600
G01 X0146.0729 Y0013.4782 F600
G01 X0146.5531 Y0012.4910 F600
G01 X0146.9919 Y0012.0426 F600
G01 X0148.0594 Y0011.4722 F600
G01 X0151.7717 Y0010.1755 F600
G01 X0153.1976 Y0009.4467 F600
G01 X0154.0069 Y0008.5887 F600
G01 X0154.7745 Y0006.9922 F600
G01 X0154.7745 Y0004.4890 F600
G01 X0153.1391 Y0002.7925 F600
G01 X0150.9624 Y0002.0345 F600
M4 P0
( end Polyline 0029 )  ( UserComment )  ( polyline 0029 )

G01 X0124.7161 Y0002.0345 F1000
M4 P230 ( [color:ForestGreen] )
G01 X0115.2564 Y0002.0345 F600
G01 X0115.2564 Y0017.3805 F600
G01 X0124.7161 Y0017.3805 F600
G01 X0124.7161 Y0015.6524 F600
G01 X0116.8918 Y0015.6524 F600
G01 X0116.8918 Y0010.8945 F600
G01 X0121.6522 Y0010.8945 F600
G01 X0121.6522 Y0009.1688 F600
G01 X0116.8918 Y0009.1688 F600
G01 X0116.8918 Y0003.7602 F600
G01 X0124.7161 Y0003.7602 F600
G01 X0124.7161 Y0002.0345 F600
M4 P0
( end Polyline 0030 )  ( UserComment )  ( polyline 0030 )

G01 X0137.8197 Y0012.8298 F1000
M4 P230 ( [color:ForestGreen] )
G01 X0137.3420 Y0011.8329 F600
G01 X0136.9617 Y0011.4332 F600
G01 X0135.4166 Y0010.8945 F600
G01 X0130.7853 Y0010.8945 F600
G01 X0130.7853 Y0015.6524 F600
G01 X0135.4166 Y0015.6524 F600
G01 X0136.9617 Y0015.1259 F600
G01 X0137.3420 Y0014.7164 F600
G01 X0137.8197 Y0013.7171 F600
G01 X0137.8197 Y0012.8298 F600
M4 P0
( end Polyline 0031 )  ( UserComment )  ( polyline 0031 )

( Footer )
M4 P0
G01 X000.00000 Y000.00000 F1000
G01 Z0000.0000 F100
M30

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Re: Missing starting part, with Makeblock LaserBot
« Reply #3 on: August 24, 2018, 08:09:21 PM »
As the attachment shows, there is nothing wrong with your g-code. The top red square is my laserBot test square g-code. The laser power and feed speeds are different from your g-code (the bottom red square) but other than that they are the same.

The attachment shows me running this square test into the Virtual Laser Machine (VLM) and you can see it burned correctly.

I'm also looking at the g-code itself to know it's correct. Therefore, you have some kind of binding problem or something going on to make it miss the first part of the burn. The g-code is absolutely 100% correct. Something is amiss in your laser machine.

Maybe someone has an idea of what you can check or look at.
Admin -- Ralph -- ralphfreshour at gmail com
https://www.dropbox.com/s/qv1qee2vb65785t/SetupBenCutLaser3.2a.zip?dl=0
BCL Paid license: $49.95
via Paypal to ralphfreshour at gmail com