I bought a Brother S700X2 about a year ago. I've little experience as a machinist, I don't/haven't owned other machines, so I don't totally know what I'm missing. However, I'm an IT guy and most of my time is spent in front of a keyboard, not in the workshop. So why did I buy the Speedio?
We build our own electrical product enclosures in house. Volumes are low (hundreds). I was previously using a little hobby router and it was "ok" (it's just aluminium, doesn't take much to cut it). However, I had a production crush and needed to solve this. I called Hurco, Haas and Brother (I'm in the UK). I went to see a local shop who have 8+ Haas and very happy with them. Then I went to see the Brother. I think you could describe the Brother as more like an office copier than a dirty bit of workshop machinery... I could honestly put this thing on the carpet in the office and it's (mostly) clean enough! The size, neatness, ease of working on it, were big sellers
However, the clinchers really were:
- It's fast for quickly making small volumes. For me, I'm not machining full time, so the quicker I can get back to making money in front of a keyboard the better. I'm generally standing in front of the machine for all my parts, so either because it's the first run, or because I only need 5 and have to swap parts around. So the rapids on this thing make SUCH a difference. Anyone who doesn't get this needs to play with one. I have a program where I can tap the rapids down from 5 to 4 and the program takes 25% longer to run... This machine accelerates to 10,000mm/min for repositioning moves when adaptive roughing across a 2mm wide slot (with a 0.5mm tool)...!
- Tool change time is amazing! Why should you care? My parts have silly tight features, like a 2mm slot with 0.5mm corners. I can use a 2mm, then 1mm, then 0.5mm tool, instead of going straight from 2 to 1mm. Adding 1 second for the tool change saves me 15+ seconds that the 0.5mm would otherwise take to do the same thing. So it's super easy to just program the part safely and not worry too much about optimising tool change ordering, etc. (I did some optimisation because Fusion was doing something stupid where it cuts middle, left, then right. Time saving was like 0.1s... The thing accelerates so fast that an inefficient path is costing you fractions of a second. Just no point optimising for 50 parts. Similarly if it makes it easy to split the program up and use extra inefficient tool changes, it's only costing you 1-2 seconds per part. That's a huge advantage to do things so they are easier to inspect or program)
- Reliability. I read all the posts here about Haas machines and not running them at 100%... The engineer who installed my machine listened politely all my worries, then turned around and said "you know you aren't going to see me again!!". He was like "I'll pop back for an annual service if you want one, but you are literally supposed to turn this machine on at full rapids, full spindle and just run it like that 24x7 for years!" I haven't owned the machine long enough to know if this is the case, but you can't easily search the internet and find a complaint about a Brother breaking down.
From my point of view, I just didn't have the experience to know how to maintain these machines (actually, it's amazing how quickly you gain it). So the Brother was 20% more expensive for something that was bonkers fast, reliable and clean and tidy, with good documentation.
It is reasonably well supported within Fusion360, however, the post benefited from some love (see here
https://github.com/ewildgoose/fusion-360-post-processors
I love the Blum probing. I'm starting to use that on all my one off parts. Again, I can hear all the experienced machinists jumping to tell me I'm wrong... However, I just don't use the machine often enough that I risk forgetting parts of a setup. So if I can automate as much of the setup as possible then I reduce error and increase setup time. So I store fixed points on the machine. Then in CAD I can initialise my WCS to be relative to those fixed points. Then I can run a probe cycle to confirm part location to the micron and even probe the exact softjaw locations (which might only repeat position to some fraction of a millimeter). This makes it so much easier to repeat a job, without the risk of remembering how to setup G5x to front/back/left/centre...
eg:
https://www.instagram.com/p/CrL3mffI_yx/
I would say that if the parts fit and the price is right for your business, then it's a good choice. Whether it's "better" than something else I couldn't say. However, happy customer here.