Ask HN: What are you using for 4 axis CNC and laser?
I am working on a nano (pico, really) brewery project and need a bunch of custom aluminum and wood pieces for our tiny brewhouse and barroom build.
I have a large workspace and am considering a range of CNC machine and laser engravers. I would like a the option (or as a separate purchase) of a 4-axis tabletop rotary option to experiment with small scale laser-etching of cans as well.
I find my self in the modern internet dilemma of google search being almost unusable due to pages of SEO spam, while reddit is also relatively gamified in this product category as well. Youtube has a ton of content here, but it's also now mostly a proxy for sponsor-creator view battles, and it's tough to wade through the many, many hours of semi-honest use/reviews when I have the day job and fam. Hackaday is great...for hacks, but not really expert reviews, and Make magazine seems to have minimal coverage here as well.
Where should I go to figure out how to get what I need in this space? Are there any HN users with enough experience in this domain that you can offer recommendations, search terms, or major product pitfalls to avoid? I am willing to go into the mid 4 figures for a good product(s) that can help me with both bar furniture trim, aluminum fittings, and laser engraving. Would love to learn as efficiently as I can what may suit my use cases. Thanks!
13 comments
[ 5.9 ms ] story [ 39.3 ms ] threadIf you want a new, expensive hobby, look into CNC machining. Don’t expect cheap parts, though.
> I am willing to go into the mid 4 figures for a good product(s) that can help me with both bar furniture trim, aluminum fittings, and laser engraving.
Mid 4 figures is about where you’d end up with an entry level 3-axis CNC, workholding accessories, tooling, and all of the other accessories you’ll need to set up the machine and cut aluminum correctly.
That budget is way too low for 4-axis and laser engraving.
I’d outsource the parts and start with a small $3-6K hobby CNC from a known brand (Bantam or PocketNC for example). Learn the basics of machining, CAM, workholding, and other basics on small parts on a small machine, then decide if you want to go bigger.
> and it's tough to wade through the many, many hours of semi-honest use/reviews when I have the day job and fam.
If you don’t even have time to research and learn the basics, you definitely won’t have time to learn how to properly operate a machine and CAD/CAM. I think you’re underestimating the work that goes into even basic CNC machining.
However, so much of the work seems to be building experience in the software and getting good at speccing the parts.
How do you get good at even ordering a part so you don't waste tons of time and money?
This 1000%.
If you’re at the point that you think you need custom machines parts for a brewery, then you probably need an interior designer (if these are aesthetic) or a brewing consultant (if these a functional).
I’m all for hobby cnc’ing! I have a probotix and LOVE it! But until you are a “machinist” don’t count on cnc being more than a hobby, not critical path.
> If you don’t even have time to research and learn the basics, you definitely won’t have time to learn how to properly operate a machine and CAD/CAM. I think you’re underestimating the work that goes into even basic CNC machining.
Yup. Time is money. If this is a commercial enterprise, get a professional solution. If this is a hobby project, explore your hobby any way that is interesting to you.
The Baron seems nice, but maybe more bulk than I need (but not too much more). I mostly need to make alot of custom plates, flanges, and mounts so we can get various pieces of equipment fixed into a brewing pipeline with automated valves I am wiring together. I have already worked out a pretty good 915mhz radio and valve network so I can automate a number of steps in the brewing process. I just need a bunch of custom fittings. These can be aluminum, so a lighter weight and smaller sized CNC mill seemed like the right spot.
Any thoughts on a more table/benchtop sized unit?
In your case it sounds like you don't need very high precision parts and the parts are not very complicated? Perhaps you can go to a metal shop to have these made and you might not even need CNC machining. In any case, I would seriously just consider outsourcing the parts and not buying/building a machine and doing this yourself.
Lasers: Boss laser imports machines from China and provides great American-based support. If you can figure things your self, check out Cloudray laser. They ship straight from China; keep in mind the customs/shipping risks. I've purchased from both before. If you're not running production jobs, 75W C02 should be fine. I prefer 150W RECI C02 laser tubes. The go-to Chinese controller is made by Ruida. At the end of the day; most of these Chinese laser brands all have the same part suppliers, just different levels of QC and quality assembly. I'd avoid Glowforge and similar brands. They are a great for first time users at home; but I'd be more worried about work volume, laser power, and future spare part availability. I know quite a few people that outgrew their Glowforge-like machines and went with bigger more industrial imported lasers.
Purchase Lightburn for sending jobs from the PC to the laser.
Routers: I have a few friends that have a larger Shapeko-like machine that works well for Etsy-like products. Think embossed cutting boards, wall art etc. Granted there part is size like 12"x 24". The machine isn't stiff (compared to industrial units); but it gets the job done. Whatever machine you purchase you'd want to stick to linear guide rail motion system for all the axis; avoid the roller-wheel style motion systems if possible. If I personally was going to buy a new router in that price range; I'd buy either an Avid Pro machine or import a chinese machine straight from Alibaba. Start with checking out OMNICNC in China. Depending on your location; check out classifed ads, or talk to some local signmakers. They might be selling their older US-made Multicam machines for cheap.
I can give much more specific recommendations based on your production rate and part size/features/materials.
EDIT: Mirroring what other people are saying. If you just need some parts just to get brewery going, then I'd sub this out to someone else. If you have time, money, desire, love to spend many hours and thousands of dollars to learn the art of manufacturing, then go for it. But I'd recommend to solve the goal at hand first. Your brewery.
Re Lasers: I've seen Lightburn come up a few times and given that canning and labeling are more core to the business (and the constraints on our space), I will probably go ahead here. Boss and Cloudray look like much better vendors than what I've seen so far. Most of the desktop laser brands I've founds seem like thin website wrappers over an Alibaba/Amazon backend, and I don't mind paying extra for support.
Re CNC: I also think the general advice here is probably right. My needs are pretty simple so the price and seemingly high flexibility of Shapeoko-level stuff tempts me to DIY, but it's also probably easier to outsource. I am just not sure where to look for a real-world machine shop that can mill these for me. If you can think of a reliable forum, online community, or vendor that doesn't force me to learn just as much about designing pieces as DIYing, I'd love to know.
Thanks all.
You can also checkout cnczone.com , practical machinist and a number of hobby/home machinist Facebook groups.