Just received my Ortur Master 2 that is 20w version.
During assembly, there are 4 nuts that bolt the laser on. I noticed the laser is ever so slightly angled if you bolt the laser on with the supplied four nuts.
Also noticed that 2 of the screws have washers while the other 2 did not.
It would seem to me the laser should be pointing straight down and not at a slight angle.
You are 100% right in your presumption and in all places where there is enough space, I use washers.
A advice in the end, keep an eye on the temperature of your laser head, and expect it to be quite high because there are no 20 Watt diodes on the market that “ordinary” people can buy for money. I mean they are at max 3.5 maybe up to 6.5 Watt ?, the rest are either lying or pumped up by xxx percent. The result is usually a very short diode life.
Here you go, I would add them to make it the same. There is a variation in washer thickness as well. I would just remind you that it’s a $300 unit and it’s accuracy is already limited by its design.
I remember reading or seeing on YouTube someone had some similar issue with theirs, but I just can’t remember where I was reading it or what they did.
I just know the laser being at an angle just did not look right.