<p dir="ltr">I have one of those full spectrum models ( its at Sudo room right now) and it's not an incredibly complex machine. I would say that wiring up the laser tube would take only about 1 minute, the difficulty is aligning the laser there after adjusting all the mirrors.</p>
<p dir="ltr">Last time I did this I used polycarbonate glasses ( which are opaque at that wavelength ) and a magnet over the safety switch sensor to make the machine think it wasnt open. I then held down the later test button and used a piece of cardboard to determine where the beam is and where it should go, and adjusted accordingly.</p>
<p dir="ltr">If anybody wants to take a stab at it, doing it that way shouldn't take more than 30 minutes.</p>
<div class="gmail_quote">On May 1, 2015 12:47 PM, "Torrie Fischer" <<a href="mailto:tdfischer@hackerbots.net">tdfischer@hackerbots.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">We've got a huge bin of screwdrivers in the dirty shop. Needle nose pliers<br>
tend to end up in the big red rolling toolbox.<br>
<br>
On Friday, May 01, 2015 01:07:06 AM Zach R wrote:<br>
> Thanks for info everyone.<br>
><br>
> That's great, I thought it was broken way worse. I can bring my tools<br>
> over and look at it next week. NOTE, we do not have ANY needle nose pliers<br>
> and the dozens of tools I donated last month (lots of screwdrivers and<br>
> such) were nowhere to be found on monday. Makes doing these repairs really<br>
> difficult cause I have to bring my tools from home...just an fyi for<br>
> everyone to keep an eye on what we have.<br>
><br>
> Do you know more about the brass contact it uses? Id be down to order<br>
> another on ebay rather than replicate / jerry rig something for such a nice<br>
> piece of equipment.<br>
><br>
> -Zach<br>
><br>
> Date: Thu, 30 Apr 2015 14:37:23 -0700<br>
> From: <a href="mailto:metatecque@gmail.com">metatecque@gmail.com</a><br>
> To: <a href="mailto:tdfischer@hackerbots.net">tdfischer@hackerbots.net</a><br>
> CC: <a href="mailto:noisebridge-discuss@lists.noisebridge.net">noisebridge-discuss@lists.noisebridge.net</a><br>
> Subject: Re: [Noisebridge-discuss] Bench Supply and Laser Cutter?<br>
><br>
> I did a little maintenance on the laser cutter a year and a half ago, there<br>
> should be a brass connection on the left side. .. if you duplicate this<br>
> connection on the right you will be good to go, do not solder directly to<br>
> the tube, you can remove the rubber insulation on the right and solder a<br>
> brass crimp connector to the wire.<br>
><br>
> Blessings,<br>
><br>
> Hilaire<br>
> On Apr 30, 2015 12:04 PM, "Torrie Fischer" <<a href="mailto:tdfischer@hackerbots.net">tdfischer@hackerbots.net</a>> wrote:<br>
> The laser tube needs wired up. It is sitting inside the tube compartment in<br>
><br>
> the laser cutter itself. Thats about as much as I know :)<br>
><br>
> On Thursday, April 30, 2015 07:29:48 AM Zach R wrote:<br>
> > Hey all,<br>
> ><br>
> > It was great to see some of the old faces at NB on Monday. We had<br>
> > Michael<br>
> ><br>
> > L, Rubin, Jake, Miloh, Kevin and some other peeps of the OG variety<br>
> > holding<br>
> ><br>
> > it down ! Felt like old times :)<br>
> ><br>
> ><br>
> ><br>
> > Me and Jake took a stab at the blown bench supply that everyone was using<br>
> ><br>
> > for years (the 15V x2 output adjustable one). It's seen a lot of use,<br>
> ><br>
> > love, and abuse and it would be nice to have it going again. It has been<br>
> ><br>
> > moved to the hackershelves now since it was taking a lot of time to repair<br>
> ><br>
> > and it got late. Here is the diagnosis I made:<br>
> ><br>
> ><br>
> ><br>
> > 1) both outputs are good voltage-wise and adjust properly<br>
> ><br>
> > 2) Current control on both sides is shot, appears worse on the left as it<br>
> ><br>
> > actually displays a negative number (hah) 3) I believe the current is<br>
> ><br>
> > controlled by 2 logic chips using a sense resistor. Those chips are<br>
> > CD1044<br>
> ><br>
> > and CD4066 I believe. 4) I recommend replacing those chips and / or<br>
> ><br>
> > investigating the current control circuitry on the power converter board.<br>
> ><br>
> > 5) Note power converter boards have 2x pico fuses each that check out fine<br>
> ><br>
> > (they are yellow)<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > And I've been meaning to ask: what exactly is wrong with the laser cutter?<br>
> ><br>
> > Does it need some expensive part? I would LOVE to take a stab at<br>
> > repairing<br>
> ><br>
> > this since its one of the finest pieces of machinery we have at NB.<br>
> ><br>
> ><br>
> ><br>
> > Best,<br>
> ><br>
> > Zach<br>
><br>
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