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Re: Circle / Squares not cutting true

Posted: Sat Jan 09, 2016 8:51 am
by Daven
:-) This thread reminds me of a joke -

A software engineer, a hardware engineer and a department manager were on their way to a meeting. They were driving down a steep mountain road when suddenly the brakes on their car failed. The car careened almost out of control down the road, bouncing off the crash barriers, until it miraculously ground to a halt scraping along the mountainside.

The car's occupants, shaken but unhurt, now had a problem: they were stuck halfway down a mountain in a car with no brakes. What were they to do?

"I know," said the department manager, "Let's have a meeting, propose a Vision, formulate a Mission Statement, define some Goals and by a process of Continuous Improvement find a solution to the Critical Problems, and we can be on our way."

"No, no," said the hardware engineer, "That will take far too long, and besides, that method has never worked before. I've got my Swiss Army knife with me, and in no time at all I can strip down the car's braking system, isolate the fault, fix it and we can be on our way."

"Well," said the software engineer, "Before we do anything, I think we should push the car back up the road and see if it happens again."


Re: Circle / Squares not cutting true

Posted: Sat Jan 09, 2016 11:37 am
by Lightnin
ah .. two belts one axis .. I wasn't thinking about that bit !
yes, if one jumps it will put it out of square.

Re: Circle / Squares not cutting true

Posted: Sat Jan 09, 2016 4:43 pm
by smilerpete
The LS6090 does have a single rod at the back with 2 belts, it does not seem to cut a straight line like the H spooky hence the square being out of true, so which belt could have skipped a tooth I don't know. Something else I have noticed is that all the mirrors seem to be lined up correctly and when firing a dot, each one is in line except when fired in the top left hand corner where the dot is slightly above the other about 1-2mm.

Re: Circle / Squares not cutting true

Posted: Sat Jan 09, 2016 8:05 pm
by Spooky
Yup belt skip, usually caused by the head hitting something that has tipped while it's being cut

Likely 1 tooth...if the machine is still under warranty (it's not a warranty job as far as I know as it's mechanical damage) I would check with Chris or HPC in general before adjusting anything, you can make a bad situation a lot worse by getting belt tension or tooth alignment wrong

cheers

Dave