Odd change in laser penetration


#4

Ooo, or the bed isn’t level, that could also explain it.

Ian.


#5

The tube is nearly new (guess who installed it?), but I’ll turn down the power & the speed, see if that helps.

What’s the best way to store ply (600×400mm)?


#6

Ian,

The spot seems to be in the same place, and checking focus across the bed it seems flat.


#7

Tube was replaced August 2018. Basing it on what you said these are the likely causes. Have you checked for good flow and air bubbles?

What the ambient temperature of your conservatory? Even at 6:30am? What do you use for cooling? A box of water or a chiller?

Bear in mind I have customer who can burn through a tube in 3 months.


#8

Three months? Ouch! My previous one lasted 5 years!

The chiller said 22C this morning, 32C yesterday. I’ll check for bubbles after the tennis…


#9

SCHECK FOCUS DISTANCEACROSS THE BED IF THE BED IS NOT LEVEL IT WILL ME THE FOCUS TO OBJECT CHANGES REDUCING THE POWER TO HIT THE WOOD

sorry cap lock on


#10

Did you get a resolution to your issue @Kiteman?

Curious if you identified the cause or not.

Ian.


#11

Yes, I’m also curious to know.


#12

I dialed it back - reduced the power & slowed it down, and no problems since.


#13

Fab! Glad you got it resolved :slight_smile:

Ian.


#14

Hey @Kiteman, would you remind me what cooling system you have? I don’t recall if you have a chiller or a big box of water? It’s worth monitoring the temperature. Remember that the ambient chiller can only cool to the temperature of the environment and needs to be kept topped up.

Good luck and I’m pleased you are getting satisfactory cuts again.


#15

Damn is it bad weather for the ambient chiller at the moment…

23 at power on…

Ian,


#16

Beat you-> 25C

I’m half way through a lampshade prototype, and a marketing piece, but I’m reduced to retreating to the shade with a stubbie of beer…


#17

Damn fine idea that man!


#18

Update: the temperature has climbedto 32C.

Second stubbie…


#19

It says “CW3000 Industrial Chiller”.

I haven’t even thought about switching the actual laser on…


#20

At 32 degrees, it’s not worth turning the laser on. Quality of cuts seems to deteriorate rapidly above about 28 degrees I seem to recall?

I suspect @Smokey would know better :slight_smile:

Ian


#21

Absolutely. Today is a day off lasering…


#22

The CW3000 is an ambient chiller, it can only cool water to the ambient temperature of the environment you are in. They’re pretty good indoors but might not be the best in a shed in the summer. I’d suggest considering an active chiller (one with refrigerant) if it’s affecting the bottom line, however they’re about £500 depending on where you get it and the model.


#23

I think i can manage - it’s only really an issue in the summer weeks, and I have no issue with getting up early to laser when it’s cool, then having the rest of the day & evening to myself.

It’s 0930 as I type, and I switched the laser off about 40 minutes ago as the temperature on the chiller rose to 25C. I’m gluing together a lampshade prototype as the family stumble about getting breakfast, then we’ve got the day together (Yay for school holidays!)