Bench Stand for FLUKE 189 & 87/IV DMM
This is what I've been doodling around with the last couple days... a properly rigid bench-use stand for my Fluke 189 that incorporates a lead holder. This unit snaps in place of the molded rubber test-lead keeper usually found on the back of these meters; it does not interfere with the original flip-out stand in any way. The idea was to have all my most-used accessories and the leads all tidy and right there when I need them. The design scope was:
A) Easy to print: Stand base is designed to print flat on its back, while both parts make heavy use of gradual tapers and curves; this means they print well without supports as long as you have Bridging Mode enabled and rotate the part to present areas that need bridging best to the fan. Any stringing caused by printing without supports tends to be much easier to clean up than the mess left behind by supports.
B) Easy to use: Once assembled, entire unit snaps in/out easily. The oversized back disc serves a purpose; it makes it easy to loop the wires over the groove one-handed and the optional wire across the middle allows similar one-handed clipping of favorite alligator leads up to 24" long as well as IC grabbit leads. Reliefs in the stand serve to keep loose alligator wires from causing trouble, and magnets in the pockets keep the screw-on alligators in place.
2) Minimal BOM: Aside from ~150g filament, all you need is (2) 10mm neodymium disc magnets and some ~8mm round dowel, tube or rod approx 300mm long. I found this closet widget which can yield 5 segments of straight tubing 285mm long for $2 at the local Dollarama. Magnets are glued in with epoxy or CA gel.
Same epoxy, CA gel or hot-glue can be used on the tube sockets at final assembly; the entire assembly lies flat which makes it easy to get it all perfectly square. Hot-glue has added benefit of being easy to undo; just hit the tube with hot-air gun and it'll come right apart.
C) Easy assembly: The stand base snaps into the Hanger accessory slots on back of the Fluke 189; one side has a deep tab that fits precisely, while the other side that snaps in is designed a little too thick so you have to sand/trim with a knife to get it to snap in just right.
E) Better with Upgrades: 1mm holes at 90° angle for the wire are part of the model; tin-plated steel mechanic's wire or the center core from a scrap of CATV R6 works well here. Push through the hole, pull tight then melt-embed in the plastic with a hot soldering iron. Cut wire flush with nippers, then pot hole from iron with epoxy. If you can't be arsed, 1mm hole is easy to ignore. If you just want the base, I've got multiple versions with no hole in the top.
EDIT: A quick Update to add a generic adapter for the IR ModuleA fellow member asked aboot a mount for the Fluke IR Module... and in researching, I found that there were a lot of folks in here who'd rolled their own IR Datalogging adapters as well as looking for the bracket for the OEM IR module. To help out, I've designed this little adapter to fit the Rev2.2 Stand with hole for 8mm shaft. It provides a 30mm x 50mm flat plate you can attach your OEM IR Module or your DIY module to with double-faced foam mounting tape or adhesive-backed Velcro strips.
It is bundled together with the correct version of the meter stand in the 2nd zip file below.
For strength, both parts should be printed 0.20-0.16LH, laying flat on largest flat surface (back of Meter Stand, front face of IR Adapter bracket), and with infill set to yield a grid pattern with 1-1.5mm spacing. Both parts will print well with no supports.
Cheers!
mnem
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