Possible causes of fuzzy engraving

Hello All,

Please see photos, this was done at 60P/45S 400dpi on 36EXT 75W

2015-10-21 17.56.06.jpg2015-10-21 18.01.08.jpg2015-10-21 18.01.34.jpg

Known issues:

1. Tube is weak as I struggle to cut .125" acrylic in one pass, @ 100P/8S/5000F
2. Encoder strip and reader are new
3. Servos/encoders have been bench tested and are functioning normally
4. Motherboard is new, and did not have any original settings saved.

I have a new tube en-route, but would like to now if there is anything else that could be causing this, such as laser match settings or any calibration? The belts and cogs are clean and in good nick, no cracks or build up. I have loosened tension bolt cycled by hand and tightened.

Thanks in advance

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Possible causes of fuzzy engraving