The Laser Project.

[budman68]

Ah, ok, thanks for that tweaks.

Any idea of the range of how deep/shallow the magent is actually pushing?

What type of tip is it? Is it blunt or?

Thanks again-
Dave

[Tweakie.CNC]

Hi Dave,

Andrea pioneered the magnet design which is driven from the Mach digital trigger by one phase of a bipolar stepper motor driver. The impact tip is, I think, tungsten carbide and it is ground to a very sharp point but what is perhaps most interesting is that it impacts the work on the return stroke so it is the spring pressure x travel distance (Z height) that determines the impact force and therefore the depth.

This Impact engraving is not something that will necessarily work 'straight out of the box' because my first attempts were just terrible but with the right setup the results are, I think, quite stunning.

Tweakie.

[budman68]

This Impact engraving is not something that will necessarily work 'straight out of the box' because my first attempts were just terrible but with the right setup the results are, I think, quite stunning.

Tweakie.

Thank you, and I wholeheartedly agree 
Dave

[Tweakie.CNC]

Have you tried it yet ??

Tweakie.

[budman68]

Have you tried it yet ??

Tweakie.

No sir, I meant the work that I've seen you folks doing with the impact engraver is stunning -
Dave

[manmeran]

hi Tweakie
Very interesting.
is it possible tell about time for last photo(dog) with mangnet Method ?
and pls dimension ?

thx
Amir

[manmeran]

i have a idea for build Magnet
by Air Valve Solenoid, magnet segment.

Amir

[Tweakie.CNC]

Thanks Dave. 

Hi Amir,

The image size is 90mm x 90mm with 0.15mm stepover. I don't remember the exact times but the laser took minutes (at 4500mm/min) and the magnet took hours (at 300mm/min).

I certainly like the idea of an air operated solenoid, particularly if it could be operated faster than a magnet.
Because the moment of impact lags behind the trigger event and the plugin operates in bidirectional mode, currently, any increase in feedrate beyond 300mm/min results in noticeably staggered verticals.
It's a challenge, but even a small increase in impact speed could reduce process time considerably.

Tweakie.

[manmeran]

Thanks Tweakie
about your cnc : ball screw driver or belt driver ?
in laser mode : how much max feedrate if we use belt driver for motion ?

Amir

[Tweakie.CNC]

Hi Amir,

I use 5mm pitch ballscrews and my maximum, 100% reliable, G0 and laser feedrate is 4,500mm/min.

I doubt belt drive would improve my machine speed because of the mass of my combined X and Z axis but a purpose built machine could perhaps exceed 20,000mm/min without too much effort.

Tweakie.