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HOW SMALL !!!!

Posted: Sat Feb 11, 2012 9:57 pm
by endcan
Heres a bit of fun, Who can do the smallest text on a novelty item, i.e pen/seed/button etc...
I have seen this on grains of rice but what can we do in blighty?
you will need to do single direction engraving ....but eho knows what expand gap does???
Theres the gauntlet how good are your eyes :geek:

Re: HOW SMALL !!!!

Posted: Sat Feb 11, 2012 10:17 pm
by Daven
Already been done by our friend Tweakie - http://www.laserscript.co.uk/phpBB3/vie ... 1555#p1555 ;)

Re: HOW SMALL !!!!

Posted: Sun Feb 12, 2012 7:27 am
by tweakie
Hi Endcan,

That's a great challenge - come on guys let's see what we can do.

Tweakie.

Re: HOW SMALL !!!!

Posted: Sun Feb 12, 2012 9:56 am
by Daven
So whats smaller than a grain of rice that can be etched? mmmm Lentil?

Not sure my eyes are up to the job TBH but will have a go ;-)

Dave

Re: HOW SMALL !!!!

Posted: Sun Feb 12, 2012 10:07 am
by tweakie
:lol: :lol:

I think you may have to use your imagination here Dave.

Spooky has threatened to make the Aztec Calendar at 1" diameter and our old friend Henry once set the challenge of how small can someone produce a chequers board.

Tweakie.

Re: HOW SMALL !!!!

Posted: Sun Feb 12, 2012 1:15 pm
by Spooky
<digs out a 1/2" focal length lens>

ok here we go :)

Re: HOW SMALL !!!!

Posted: Sun Feb 12, 2012 2:09 pm
by Daven
Spooky wrote:<digs out a 1/2" focal length lens>

ok here we go :)
That's cheating - only standard lenses allowed :lol:

Re: HOW SMALL !!!!

Posted: Wed Feb 29, 2012 11:14 am
by tweakie
Here we go - a 1mm chequers board (may take some time to make the chess pieces though :lol: )

It's not perfect because I was using minimum power (in order to keep the dot size small) and the laser needs a bit of warming up - so for the next attempt I will try using a 'border' so the tube will be primed and ready for the dots (perhaps it will work, perhaps it won't)

In theory I should be able to get this down to 0.5mm square but don't hold your breath waiting :D

Tweakie.

Re: HOW SMALL !!!!

Posted: Wed Mar 07, 2012 5:04 pm
by Ellie at HPC
We have been playing with Thermark paste and have managed to mark some small metal tools. What do you think? :D

Ellie

Re: HOW SMALL !!!!

Posted: Wed Mar 07, 2012 5:31 pm
by tweakie
Hi Ellie,

That's excellent. 8-)

Tweakie.