• A new beginning!

    Tim Trzepacz10/11/2015 at 10:25 0 comments

    I've actually continued on this project. First, I got all of the foreground elements printed on acrylic sheet by a professional printer. That cost $$$. I used Signs.com. Despite much online chat consultation, they failed to print my registration marks, and added an extra white background. They didn't respond to any inquiries about that, so I guess I have to live with it.

    Then I had all the foreground elements laser cut out of the sheet. Thanks to Diego and Metal at Deezmaker for letting me use their laser cutter!

    Now, I needed a new light box to mount everything on, and I wanted something better than the glued MDF boards I used before. I tried to do 1/8" plywood using the laser cutter at Deezmaker, but it tended to flame up and make a lot of smoke, and the cutter was too small to cut the pieces completely in their full size, so I had to abandon that idea.
    I was very lucky that Plasma at the Plasmatorium near 23b Shop Hackerspace in Fullerton was willing to help me out with his giant 4'x8' laser cutter! It made short work of the whole thing. First we tried the plywood again, but Plasma was unsatisfied with that, so we moved to 1/8" vinyl coated MDF. Not as sturdy as plywood (don't try to drive nails or screws in the sides!) but it looks swell and cuts great on the laser!


    Once cut, it was pretty easy to glue the parts together.

    It was supposed to be reinforced with screws or small nails, but that didn't turn out very well.


    Finally, the whole lightbox was together... now we have to put lights on it! Although I had made a whole new light plane for the box, it was easiest just to take the already wired plane from the old box and wire it in place. The backlights were originally christmas tree lights; I was supposed to use the blinky ones but they didn't fit in the holes! They were hot and not very bright, so I switched to PC mod kit CFL tubes powered by an old PC power supply hidden in the case.

    The speakers were also added at this point... again, salvaged from the previous version of the display stand.

    Let there be light!

    The printed acrylic backplate was attached to the frame using foam double sided tape and then screw holes were drilled and screws added. The foam tape would cause me a lot of trouble later...


    I realized that I had left out some crucial holes to run power to and sound from the Nintendo DSi that mounts on the front of the box, so I carefully added them on my drill press.

    There was still a lot more to be done, but I needed the stand for events, so I just stuck the foreground elements on with double-sided tape and took the stand on tour.


    But this wasn't the completed stand! The elements are supposed to face up at an angle and be backlit so they stand out. I designed spacers to be 3d printed.
    It took a long time to find somebody who would print them for me, but eventually Trenton Clay Wilson at MAGLab in Pomona agreed to help!

    Months later, I finally drilled all the mounting holes, attached all the 3d printed bits, found appropriate glue and attached all of the printed acrylic parts. I had these printed on the front of the acrylic so that the back would be safe for gluing.

    Because of thermal compression as the 3d printed objects cool, they come out slightly smaller than the target, which leads to some not-so-great edges. But you work with what you have...


    But we still need to get the lights in! Time to drill some holes. I finally discovered that a "step drill" is the best way to make a hole in acrylic sheet. The ones Harbor Freight sells are fine... acrylic is soft. Home Depot will charge you $50 for what Harbor Freight will sell you for less than $10.

    I did the backplane and the spacers separately, doing the backplane first, then using a marker to mark where holes needed to be in the spacers.

    On to the spacers!

    So let's try it with some Christmas lights...

    Hmmm. I'd like it to be brighter, but it is a start!

    So the next thing to do is to determine what lights are going in and then make some sort of good mounting for them so they don't pop... Read more »