[ariemeir]

Hi guys,

I have had my ~ $800 chinese laser cutter with moshi bought on ebay for about a year.
recently i have noticed that the cuts are not clean.

Please take a look at the attached file (the material is printer paper):

1. the circle has a little bump in it
2. the square is not a square (3 sides are perpendicular but the right one is not)

Both shapes are around 1/2 inch in dimension

Any advice where to start troubleshooting it ?
I am trying to come up with a hypothesis - what could cause such a weird and repeatable deviation ?

any ideas would be very much appreciated,
Regards,
Lenny

[mondo50m]

In the front of the machine there is a black piece of metal held on with a couple of screws. If you remove that bar it will expose the round bar that is used to move the y axis. Sometimes the allen screws on the right hand side, where is connects to the stepper motor come loose and cause what you are getting. Just put some loctite on the ends of the allen screws and retighten. Hope this helps. Otherwise it looks like missed steps, and you should check the belt for missing teeth or anything that is loose.

[thunderlaser]

Hi guys,

I have had my ~ $800 chinese laser cutter with moshi bought on ebay for about a year.
recently i have noticed that the cuts are not clean.

Please take a look at the attached file (the material is printer paper):

1. the circle has a little bump in it
2. the square is not a square (3 sides are perpendicular but the right one is not)

Both shapes are around 1/2 inch in dimension

Any advice where to start troubleshooting it ?
I am trying to come up with a hypothesis - what could cause such a weird and repeatable deviation ?

any ideas would be very much appreciated,
Regards,
Lenny

Hi Lenny
This issue is caused by the structure of the machine has a problem
It is mainly the belt and the gear of the connection has problems.
Please refer to the instructions of our website about a similar with the troubleshooting
I'd like to say about our machine structure might be different, but the reasons for this problem should be the same
So please just make a reference.
Please click here to enter the instructions of our website:
Cutting original point does not meet end point

Hope it will can help you to solve the issue with your machine.

Sincerely
Tom
Thunderlaser- leading provider of laser cutter and laser engraver from China