SH-350 Mirror alignment

**Wolfster** · 23-01-2016

Hi,

A bit of a desperate plea for help I'm afraid... Does anyone know of any hobby laser support / setup people in Kent UK? I'm located in Dover Kent.

The issue I have is mirror alignment. After spending hours over a number of weeks I just can not seem to complete this simple task. Each of my many attempts has just ended up with me sobbing in the corner. I'm at the point where I need help and happy to pay for someone's time.

It's a Shenhui SH-350 (50W Chinese laser).

When I originally receved the machine it worked out of the box but after an hour or so of firing it stopped working. The vender sent me a new power supply and tube which I fitted (it turned out to be a faulty PSU) and the machine is firing fine again but I cannot nail the alignment.

I've watched a myriad of videos and read loads of articles around the subject and been though a number of rolls of masking tape but I just can get it right.

Many thanks,

Paul

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**komatias** · 23-01-2016

Hi Paul,

bit out of the way for me to come have a look but I have the same machine as you, I think. Did my alignments recently again too to make sure it was good. What seem to be the issues that you are actually having? Is the spot on each mirror not central? do you have differing intensity/focus with travel?

I find that if I am not getting good results it is usually warped wood being cut or dirty lenses. May not be your case but do give the optics a clean.

so let us know what happens and I will try and help you.

**Wolfster** · 24-01-2016

Hi,
Thanks for the reply.

To be honest I’m pretty sure it’s user error!
It’s difficult to get the laser tube central on the first mirror (to high) then I just can’t seem to get the beam parallel on the second mirror with at least 5mm or so movement at each extremity of Y axis travel.
Any advice would be appreciated.
Thanks