Hi all,
So I'm wanting to get into CNC machining. I've been around machines most of my life (had a hobby lathe in my bedroom from the age of 10...) but never run a CNC machine. Anyhow, the itch is getting stronger so I'd like to pick your collective brains on just how daft my ideas are, amongst other things...
I'm located in the UK, so it seems like a lot of the threads about guidance on getting a machine that I've read here don't quite add up for me (prices, sources, common machines & controls, etc).
My budget is essentially 'as little as possible', but I don't want to waste my time and/or money buying something that will be constant hassle. I've spent enough of my life swearing at terrible quality and laughably under-powered machines already. I'm starting from zero in terms of workshop setup, though I do currently have access to a handful of manual machines in my current job, so I basically need the lot. I can figure out compressor etc etc etc - my main knowledge/experience void is the machining centre itself, and assosciated tooling.
I should mention at this point that another pipe-dream for me is to make some rather large aluminium components, up to almost 1000mm long x 500mm wide (x <100mm thick). These would be heavily machined, starting with a full billet and ending up with only 1 - 2kg. My other plans involve some fairly general job shop work, possibly including some tooling/fixture parts which might need to be decently accurate. Most of the time I'd be machining aluminium or mild or 303-ish stainless, and I wouldn't be expecting to hold microns from the start.
I'd like to be able to program manually for simple parts, but I'll definitely need to use CAM for complex parts, so a control capable of both (even if I need to drip-feed code) is needed.
Of course I'm looking at used machines, since my budget for the machine itself really maxxes out at £15k inc. taxes (£10k or less would be much easier). I've been looking around eBay (not much on offer in the UK nowadays seemingly?), and a bunch of asset disposal/auction websites. I've come across a few mid-late 90's Haas VF0 - VF2 machines, as well as a few Hurco BMC's of similar vintage. There's currently a 2000 Mazak VTC-200B up for auction within budget, which I think could be an amazing machine to own. I've also spotted a slightly suspect 2007 Haas VF4 up for auction. My thoughts on them are as follows:
Haas VF0 - VF2 machines:
Pros:
- Cheap and plentiful
- Plenty of support/guidance online
- Intuitive control
Cons:
- Potentially not much life left in a 20 year old machine
- Not '20hp'
- Too small to make my large components
Hurco BMC30 etc:
- Decent price, not rare
- Apparently excellent control (I haven't researched it much yet though)
- Generally decent machine, more rigid and durable than a similar Haas
Cons:
- Too small to make my large components
This one Mazak VTC-200B that I can potentially afford:
Pros:
- Mazak quality/power/longevity
- Big enough for my large project
- Good control when you understand it? (Mazatrol 640M)
Cons:
- More expensive repairs than the above
- Less support/guidance due to being less common than the above
Suspect 2007 Haas VF4 that I can potentially afford:
Pros:
- Plentiful
- Plenty support etc
- Simple Haas control
- Large enough for my large project
Cons:
- Part of the Z way cover missing
- Looks like it may have had a hard life in the photos
What are your thoughts on these machines, at a glance, please? Any that I should outright avoid for reasons I'm not aware of yet? And do you have any other recommendations or even sources for used machines?
I suppose I'd be wise to only go for the cheapest functional machine really, since I have a lot of other risks and unknowns (and £10k is a years wages for me :D)...so I suppose that's the smaller Haas offerings, or Hurco equivalent.
I've also thought about older machines like the Mori MV-JR, but can't find any up for grabs right now on the island.
Assuming I do pick up a machine with a CAT/BT 40 spindle, how much should I budget to get set up with a small collection of essential holders and cutters to get me going? And should I try and pick up a tool setter from the start?
Sorry for the excessively rambling post. I'm sure I'll have plenty more questions to follow too.
Thanks in advance for your time, experiences and opinions :)
Tam