GM328 Tilting Case (Remixed for Multi-color Printing)

This case is more or less a set of replacement parts for the most common acrylic case sold for housing the DIY GM328 component tester. While it includes replacement parts for all the acrylic parts of the original case, with exception to the small battery partition piece, it requires the 8 M3 screws, nuts, and 4 nylon standoffs that came with the case to be absolutely complete.

This iteration of my GM328 tester enclosure has been remodeled specifically for printing on machines capable of multiple color extrusion.  Now that I have a tool changing machine, I find myself revisiting much of my old work to make these things the way I would have preferred originally.  If you don't have a machine directly capable of multi-color prints, this model is NOT for you.  Consider using the original model from which this is derived:  

This set lacks the little partition piece because I modeled into it a more user friendly battery compartment.

I've only included the parts in this remix with the parts I'm using with my GM328 tester which include the side panels supporting the easy access for battery swaps, and holes for test lead connections.  If you prefer to use parts modeled directly from the acrylic case I purchased originally after building my GM328, the left and right side panels from my original design are fully compatible with this version and are available individually from the link above.

Why did I make this case that is so close to the original acrylic case? I've done this GM328 kit twice. I built mine years ago, and another for a friend just months Later.  When I built mine, I drilled the holes for my banana jacks in the front center panel. To access those connections, the device must be laying flat on the bench which is not a good viewing angle. When I built one for a friend, I had a 3D printer and designed a tilting stand for these. Unfortunately, I couldn't use the stand on mine because the probe leads would bottom out on the bench.

I wanted to make a replacement piece for the one I drilled, and a replacement piece for the left side with my holes already in it. I also wanted an easier way to change the battery than disassembling the whole case each time. Since I'd already modeled the back for the tilting stand, followed by the left, right, and front center portions of the acrylic case, I decided to eliminate the acrylic parts entirely, and modeled the entire case.

The measurements are fairly true to the original case design, and the pieces are individually interchangeable with the original case pieces. Use this kit entirely, or use only what you need from it.

If you're already using my tilting stand with the replacement case back, the part is identical to what's included in this kit, so there's no need to reprint that to use other parts from this kit.

I did add printable standoff's for those who didn't purchase the common acrylic case for the GM3238 PCB.  If you don't have the hardware that came with the acrylic case it can be purchased separately.  In addition to what's available here, you'll need four M3 X 28mm screws and four M3 nuts for mounting the PCB with stand-off's to the bottom of the case.  The four screws on the outer perimeter that hold the case together are M3 X 39mm's, and you'll need four M3 nuts to pair with those.  In total, you'll need:

4 M3 X 28mm screws
4 M3 X 39mm screws
8 M3 nuts

Additional notes about banana's:  Since I use my GM328 with probes most frequently, I put 12mm holes in the left perimeter for the "safety" style banana jacks so I can use it with both standard 4mm banana plug equipped leads and 4mm safety style leads.  For those who wish to use "non safety" type 4mm banana jacks with this, I've included a set of side perimeter panels with 8mm holes that work with those.  For those who don't use leads with their GM328, I've included a hole-less version of those side panels as well.  The case in the photos uses the safety style jacks that fit 12mm holes.  I did NOT include perimeter panels without battery access for this release.  If you need perimeters without battery access, you can find them with the original design from which this model derives.  The page with the original design also contains photos of the full assembly process if there are questions on how to assemble this case.

UPDATE 09052026:  I added stand-offs for use with the four perimeter screws.  Having exposed screw threads make the meter look incomplete, and adding the standoffs also allows for better tightening of the screws without bowing the face and back of the meter.