Thread: Which cnc
Why not ask them how much to add a second ballscrew? They might say it's too much work to change the design, but it can't hurt to ask.
Also in the listing there is far less information than there should be. It doesn't look like any of the pictures have the actual machine that listing is selling - the AR1200. Some of the bigger ones have vacumm bed and other nice things, you can bet that costs more.
These are all things you should look for - profile rails (generally Hiwin is used), ballscrews on all axes (no need for rack on such a small machine), proper spindle not a router. Once mounted properly supported round rails aren't too bad, but since you're willing to spend £4k ish you should be able to get profile rails which will increase the rigidity which is the among the most important aspects of the machine.
The title of their other video of that machine says it all really - Low cost CNC Router, not 'High quality CNC Router'. The video shows the machine cutting pretty fast (due to the rack and pinion), but what about important things like resolution and surface finish? Not a clue from their video which is why you need to go and see it cutting.
I have no objection with what has been said about the ballscrew just how costing is worked out.
You are working out of a shed that mummy and daddy are paying all the expenses for and you are trying to tell registered business's how to do their job ?John S -
'When you must register for VAT:
Your turnover for the previous 12 months has gone over a specific limit - called the 'VAT threshold' (currently £77000)'
Plus it says I don't pay income tax below £2710, so that doesn't apply to me or many of the 'garden shed brigade'.
No prices on the site, so probably too expensive, but this has all the features I mentioned:
So if your so sure then get intouch with Inland revenue and tell them all your undeclared earnings, I'm sure they won't mind you not paying tax on your £7 hourly rate because your working out the shed.!!
Being self employed I see John S point completely regards costings and UK business pricing. I'm also one of the first to condem Uk business's for ripping UK buyers off but in this instance I don't think this company is doing that if the machine turns out to be all that it's made to appear.? . . . Thou I do suspect that won't be the case.!!
Oh and the machine in the U-tube video was actually using belt drive not R&P.!!
What are you smoking ?
The whole conversation started off on fitting an extra ballscrew, clearly says in the ebay advert ballscrew with rotating nut.
I don't know why i bother, I don't have an axe to grind or anything to sell. It just gets repeatedly tiresome pushing fooking prams out of the way all the while.John S -
But yes for 5K I wouldn't expect or want either.!! . . . I actually suspected the original Ebay machine used R&P on the Y axis has I couldn't see any signs of motors or screws but now I'm thinking it may use belt drive but again either isn't good enough at 5K.!