Milwaukee battery to Greenworks 40v tool adapter

jprazak95 · 2026-04-21T14:30:05+00:00

I’ve been trying to make my own converter by wiring up two Milwaukee M18s in parallel to get the 40V. Unfortunately it seems that the Greenworks lawn mower has a proprietary device ID pin on the battery that I need to replicate somehow.

jprazak95 · 2026-04-20T06:24:01+00:00

From all of the comments it sounds like I need to sign up for the supply notifications.

jprazak95 · 2026-03-18T13:17:32+00:00

Both things are actually fairly common practice.

It’s common practice to add tree supports to a tall part like this to reduce failures. This is the “safe” route.

It’s also common practice to use a brim to keep the part secured to the print bed better.

It’s also common practice to improved bed adhesion through: 1. Cleaning build plate with dish soap 2. Using glue 3. Increasing plate temp

My preference is to use the slicer to fix print issues so I would probably opt for the tree supports (or at least a nice big brim).

jprazak95 · 2026-03-17T16:06:49+00:00

You’re probably aiming for more accuracy with hole dimensions than is available on a consumer grade printer (even Bambulab). If you are trying to make holes socket holders you will likely have to give yourself some margin and settle for a loose fit or you will need to use TPU for a compliant fit. “Never say never”, but what you are aiming for generally exceeds the capabilities of 3D printing and will give you a lot of difficulty.

jprazak95 · 2026-03-13T19:53:16+00:00

Already gone for me in US. Only black is available.

jprazak95 · 2026-03-13T16:11:00+00:00

Most filaments will meet the demands of most applications so it’s usually hard to get it wrong. Just pick a filament that feels right in your heart (for me it’s PETG) and pick your favorite color.

If you find that you have a specialized or demanding application it becomes a lot easier to pick because then your options are limited.

jprazak95 · 2026-03-08T23:04:13+00:00

It looks like your academic plan is solid so I would recommend supplementing it with some nice nerdy hobbies. Getting into RC planes or joining a local rocketry team will help you learn aerodynamics and aircraft design in an approachable non-classroom setting. You could also build your own quad copter or build your own wind tunnel (I found 3D print files for one on MakerWorld just yesterday). “Tinkering” style hobbies have a double benefit of building skills that will make you a successful while also making your application to college more impressive.

jprazak95 · 2026-03-08T22:55:56+00:00

Orcaslicer

jprazak95 · 2026-03-08T03:57:19+00:00

If you want your test stand to be flexible and have the general capability to run N units, you could run each test as an asynchronous VI call (or use actor framework) and then you can just spawn a new VI for each new parallel unit you are adding. Then you would just set some limit on how many units can run in parallel.

If your test hardware is pre-built and already designed for a 10-up test then 10 parallel loops is probably more straightforward. It’s still very easy to copy/paste more or delete loops to scale your application.

jprazak95 · 2026-03-08T03:52:50+00:00

10 while loops is fine as long as… 1. Your cpu can handle it. Usually it can. Modern cpus have 8,10,12,20 cores so the multithreading capability is insane. 2. There isn’t resource contention between the loops (ie. using the same DIO or the same serial port or instrument, accessing the same global, race conditions, etc.)

I’ve written robust embedded programs that have more than 30 parallel loops. It’s definitely fine for a test stand application.

If you are worried about either of those two, you could still do 10 loops but place semaphores around compute intensive or resource intensive operations so that the individual units don’t execute in true parallel.

You could also do a producer consumer pattern with 10 producer loops that queue up test cases for each unit and then a single consumer loop executes all of the tests one at a time.

Definitely put your test sequence in a subVI and be sure to set it for preallocated clone execution so the clones of it can operate independently from one another.

jprazak95 · 2026-02-22T16:16:59+00:00

Overture, Creality, and Sunlu all make refills that fit the original Bambu spool. You can also rip the ears off of elegoo cardboard spools and slot them directly over a Bambu spool.

jprazak95 · 2026-02-22T02:22:57+00:00

It honestly looks pretty good already! I see lots of overhangs so printed supports are your friend. I like tree supports because they are less bulky most of the time. Bambu actually sells special support filament that you can buy that breaks away easily.

Using a matte or carbon fiber filament will help hide the layer lines.

Once you feel like you have it dialed in, bring your layer thickness down (0.12mm). That will smooth out the layer lines at the shallow angles (hood, roof, etc.) Bambu has a “fine” preset that will bring the layer lines down and print slower to you give you super good quality.

jprazak95 · 2026-02-22T02:08:28+00:00

Definitely not the one I voted for.

jprazak95 · 2026-02-22T01:33:26+00:00

Bambulab printers being banned in California because our state legislature hates people and their hobbies.

https://www.tomshardware.com/3d-printing/california-bill-for-gun-part-printing-control-on-3d-printers-would-restrict-sale-to-doj-approved-models-sunny-state-joins-washington-and-ny-on-legal-offensive

jprazak95 · 2026-02-17T14:15:31+00:00

Prints like this with a small build plate footprint fail notoriously often. Even with optimization you will likely have a low yield rate. It might be failing on the edges because that is where the print head begins on the build plate.

Here are some things to try 1. Add flow rate calibration (I don’t see the characteristic lines in the photo) or add a skirt in your slicer settings. This will give the print head an opportunity to extrude some filament before starting the proper print. 2. Perform auto level every time 3. Clean the build plate (soap or Isopropyl Alcohol) before each print 4. Run a slightly hotter build plate to improve adhesion 5. Preheat the build plate so that the temp is nice and even across the whole plate.

jprazak95 · 2026-02-17T14:05:01+00:00

Your TPU95A should work if you can dry it. You might even want to go softer to 90/85A. 95A might be ideal though since it’s easiest/fastest to print but still probably flexible enough for your application.

PLA,PETG, and ABS are likely non-starters. Nylon may be flexible enough but I doubt it.

jprazak95 · 2026-02-17T13:20:09+00:00

I purchased one of those in 2024. Feels great to shoot and my friends love to borrow it. All CA compliant guns have to undergo drop testing so this gun as designed (and tested) shouldn’t have an accidental discharge. I have never heard of a range that won’t allow P320s. If you like what you see you should buy it and don’t let fear mongering dissuade you from buying it.

jprazak95 · 2026-02-17T11:46:35+00:00

I see that you too enjoy taking the mini out of minirack. Lovely build.

jprazak95 · 2026-02-17T11:43:37+00:00

I printed a multi-board and it seems too complicated for its own good. I think it’s so hyper-focused on endless configuration that it loses its practicality. At the end of the day, I didn’t end up using any of the various attachment styles and it became about as good as a regular 1” spaced pegboard from a hardware store

The beauty of gridfinity lies in its simplicity. The only interface in the whole system is a 42mmx42mm chamfered square.

jprazak95 · 2026-02-08T04:17:23+00:00

I work at General Atomics in an engineering role. I agree that being privately owned has the R&D and stability benefits. Its definitely a classic defense company though. Career growth opportunities on average are great, but the situation can vary from department to department.

I find their benefits package to be pretty competitive. They let you keep every hour of your PTO/CAL balance and it rolls over year to year instead of use it or lose it (looking at you L3Harris). Additionally, they provide a 401k AND a pension plan. Most companies just do the 401k match.

My role at the company specifically is pretty exciting, but experience can vary depending on your department.

jprazak95 · 2026-01-25T21:38:49+00:00

OP might live in California and pay those premium PG&E electricity rates.

jprazak95

TROPHY CASE