• RE: Makerspace FirstAid Workshop - May 4th

    Hook me up. Let’s tourniquet some head wounds!

    posted in General Discussion
  • RE: Just an interesting video i stumbled upon

    When I was still working with Alex over at Spire, he wrote a blender plugin that generated objects similar to the “blooms” in that video in a parametric manner, then 3d printed them on the Solidoodle, and did a series of stop-motion animations with them. Very interesting to see apparently vertical movement and tumbling come out of a solid part rotated horizontally.

    posted in General Discussion
  • RE: Our 1390LC Laser Cutter

    So, we have 65 hours on the laser since I installed the meter.

    @Vaughn told me he cleaned the lenses in the last couple of days, so I got Jerid to swap out the furnace filter and vacuum out the filter enclosure.

    I tried to fix the x-axis belt alignment issue, to no avail. It looks like the holes were drilled slightly off at the factory and it just took us a while to notice the wear on the belt. In order to compensate, we are going to have to make a mounting plate that gives us control of the pulley angle. Either that or resign ourselves to replacing the belt occasionally, and having spares in stock.

    I confirmed that when you move the Z-axis, the laser dot still drifts down and to the left. Alignment is better than it was at its worst, but is still off. Also the laser, when in focus is not round at all:

    0_1493090046836_focusyoufack.jpg

    I dropped the bed about an inch and a half between shots. The two hits should have nearly co-witnessed but the beam drifts as it moves down. Also, the close hit beam should have been perfectly circular. Initially I thought maybe the beam was hitting the inside of the lens tube. But this shot makes it clear that it is not hitting near the center of the mirror at all:

    0_1493090173312_laseralignment.jpg

    That circle is me rubbing my greasy thumb on the paper and outlining where the hole that goes into the lenses is. Documentation I’m seeing online indicates that we need to hit within 2mm of the center of that circle everywhere on the bed. As it is, we are just clipping the edge of the circle, losing some of our beam, and getting the strongest part of the beam to hit the edge of the lens, which is likely curving it off center.

    About 8 minutes 20 seconds into this video is a pretty good description of how to systematically remove the error from your laser alignment.

    Unless someone comes up with a better suggested procedure, I’m going to try to follow those instructions. @arasbm @Nicholas @MIPS anyone else have suggestions?

    Also, I’ve created a very simple form for logging laser cutter maintenance:

    It just saves info to a spreadsheet in google drive for now. I’d like to capture how many hours before various things need doing so we can start to predict issues. I’ll eventually build it out into `a proper maintenance application with a database backend, but this will do for now. If you do work on the laser, or replace any bits, please use the form to make it easy to track. I’ll try to put it on the desktop on the laser-cutting machine.

    posted in Tools and Space
  • RE: Farmers market

    @arasbm said:

    I would have to get a table to sell my own farm products.

    So you are at a point where you have products to sell? I’d take a dozen farm eggs next time you are in town with more than you will eat. What else do you have available? Maybe some tasty lamb-burger? Did Anastasia ever get her goats?

    posted in General Discussion
  • RE: Im interested in a "Froggy Mill" CNC 3020 instruction class.

    I would be for a workshop

    posted in General Discussion
  • RE: Im interested in a "Froggy Mill" CNC 3020 instruction class.

    I used to run these workshops. If there is enough interest, I could schedule something for two to three weeks from now.

    If anyone else wants to help me run this workshop please let me know. It would be great to get more people using the froggy mill.

    In the past the workshop focused on doing simple 2.5D carving based on a vector image. The best free tool I have found for that is easel.

    More recently there has been a few cool 3D CAM applications made available for onshape which I would really like to try on the froggy mill. If this works out successfully, we could also add that to the CNC 101. Check out this video to see what I mean:

    posted in General Discussion
  • RE: Farmers market

    @pierre thanks for dialing me in here, but if I do go to farmers market this year, I would have to get a table to sell my own farm products. We can not sell both farm produce and makerspace stuff on the same booth. If we both go on the same weekend, I could ask market manager to put our booths next to eachother, they were open to that last year.

    One thing the farmers market board were emphasizing a lot, was that items that we sell at the makerspace booth should be made by makerspace members and at makerspace. However, if there are things there just for show and not for sale, they seemed ok with it. It is a great way to get you product introduced if you targeting local market.

    Another important thing is that if you commit to the table you need to be there early morning and set up before the market starts and be there untl market ends. Market manager and other vendors really don’t appreciate when people set up late, or leave early.

    It was a lot of fun hanging out with @Chainmaildave @pierre ashley and @megan-fenkhuber at the market last year. Hope you guys can do it again this year.

    posted in General Discussion
  • RE: Makerspace Cabinet and Shelving Materials

    Maybe I’m being stupid paranoid, but I’ve messed up melamine-faced sheets before, and this stuff is too nice to ruin.

    posted in General Discussion
  • RE: Makerspace Cabinet and Shelving Materials

    As the resident wood-ignorant guy here, do we want to use a particular blade or techniques to avoid chipping the phenolic face when cutting this stuff?

    I’m assuming zero-clearance insert, some sort of fine-tooth but stiff blade… Maybe score the cut line before cutting? Face up or down?

    @Bradley-Maker or @Timo would probably have the answers here. Maybe @n0pe will know.

    Chances are I’m going to mount it with aluminum trim anyway, so it’ll hide my butchery.

    Canadian Tire carries several sizes of 1/8 aluminum C-channel to fit different sizes of plywood sheet. With a little smear of silicone you usually get a pretty good seal, and if you mitre the ends, it looks pretty nice.

    posted in General Discussion
  • RE: Farmers market

    Looks like it is $30 for a daily table on a Saturday, or $240 to get a seasonal… So, the break even is 8 events. I think there are 29 Saturdays from April 22nd to October 28th, 2017. How many people are interested in splitting a table this year, and do we think we’ll go more than once a month?

    posted in General Discussion