[Fab] Laser cutter

Corey McGuire coreyfro at coreyfro.com
Fri May 6 15:17:14 PDT 2011


The only trouble I see with that tact is ventilation related.  Wood in
the machine makes smoke.  Smoking at a rate faster than the fans can
evacuate the smoke will cause the machine to fowl, cut to degrade, and
cranky bastards complaining about the laser.

I am most worried about the later because I have already been bothered
by politically motivated dicks with axes to grind.  So far, only idle
threats about NB not being a place for a laser engraver, but I don't
take them lightly.  Not because I want to make these people
happy...no...because I want a fucking laser engraver.

Which brings me to a point that NONE of these aforementioned dicks has
made, even though I said I would back them up on it if they did:

Lots of people want to move the dirty shop.  Some want it in the back,
some want it off a short pier.  Being a do-a-crazy, if they don't
bring it up on the list, they don't get their way, period.  I'm happy
with that.  But, in the interest of prosperity, I have the following
suggestion: Swap the back classroom with the dirty shop, partition the
areas in any legal and legitimate way possible to prevent noise, dust,
and fumes from spreading.  Vent-vent-vent.  What is good for the dirty
shop is good for the laser.

When it's time, I will help the move from start to finish because I
use both of these areas...but...until they bring it up, I say fuck'em.

On 5/6/11, Sean Cusack <sean.p.cusack at gmail.com> wrote:
> I've definitely cut through a ton of 1/4" ply on epilogs - in my experience,
> wood is significantly harder to cut than plastics. If you go slow,
> everything catches on fire. too fast and nothing happens. I've had luck
> using the highest power I can manage, and then adjusting speed/passes
> accordingly to make sure wood doesn't burn. Unfortunately, since a lot of my
> work has been on 60 or 100W systems, the setting I generally use are
> probably not very applicable here...not sure if that really helped or not...
>
> Sean
>
> On Fri, May 6, 2011 at 2:49 PM, Corey McGuire <coreyfro at coreyfro.com> wrote:
>
>> 60 passes at 1.5ma, not through.  Trying 30 passes at 3ma right now.
>>
>> Part of the problem, as I have experienced it, is the wood gets cooked,
>> burnt, and won't cut readily anymore.  If anyone has other ideas, let me
>> know.
>>
>>
>> On Fri, May 6, 2011 at 9:05 AM, Corey McGuire
>> <coreyfro at coreyfro.com>wrote:
>>
>>> I should say that cutting through the glue layers was messy, but trying
>>> 50
>>> passes instead of just 10 might be the solution.
>>>
>>>
>>> On Fri, May 6, 2011 at 9:01 AM, Corey McGuire
>>> <coreyfro at coreyfro.com>wrote:
>>>
>>>> I have had little success with plywood, but I have some ideas on what to
>>>> do next.  I have some 3/16th's luan that I've tried before.  I'm going
>>>> to
>>>> make something a little less complex and try a new tact, soon.
>>>>
>>>> On Fri, May 6, 2011 at 8:54 AM, Dave Johnson
>>>> <dave at chenerystreet.com>wrote:
>>>>
>>>>> Hello Fabbers,
>>>>>
>>>>> New guy here: I understand from a coworker that y'all have a largely
>>>>> functional laser cutter...can it cut 1/4" plywood? 1/8"?
>>>>>
>>>>> If so, I'd love to come by, throw some dollars in the jar, and play
>>>>> with
>>>>> it a little. I'd probably want someone who knows their way around it to
>>>>> give
>>>>> me an introduction, maybe I can arrange to meet somebody?
>>>>>
>>>>> I just finished my latest machine (see
>>>>> http://www.youtube.com/watch?v=W7REmfZ6O5U) and after cutting all those
>>>>> gears on a scroll saw I'm ready for a computer assist :-)
>>>>>
>>>>> Thx,
>>>>>
>>>>> Dave
>>>>>
>>>>> _______________________________________________
>>>>> Fab mailing list
>>>>> Fab at lists.noisebridge.net
>>>>> https://www.noisebridge.net/mailman/listinfo/fab
>>>>>
>>>>>
>>>>
>>>
>>
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>


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