[ rss / options / help ]
post ]
[ b / iq / g / zoo ] [ e / news / lab ] [ v / nom / pol / eco / emo / 101 / shed ]
[ art / A / beat / boo / com / fat / job / lit / map / mph / poof / £$€¥ / spo / uhu / uni / x / y ] [ * | sfw | o ]

Return ]

Posting mode: Reply
Reply ]
Subject   (reply to 2721)
File  []
>> No. 2721 Anonymous
10th May 2020
Sunday 11:19 pm
2721 desktop cnc
I've been eyeing a purchase of these for about ten years and in that time, the market has evolved greatly. I don't need to make large parts, I don't want a 3d printer, I do want something good.

eBay has kits that come from China for about 120 quid. I know these will be quite bad, but how bad? Do I really need to spend a grand on a Stepcraft?
Expand all images.
>> No. 2722 Anonymous
11th May 2020
Monday 12:51 am
2722 spacer
>eBay has kits that come from China for about 120 quid. I know these will be quite bad, but how bad?

They're pretty toy-like. They'll make light cuts in wood and plastic, maybe engrave aluminium, but that's your lot - they just don't have the power or the rigidity for more serious work.

The essential question is what sort of parts you want to make. If you need to produce complex parts in metal that are beyond the capacity of a three-axis machine, you'll either need to order them from eMachineShop or get into lost PLA casting. If you're producing very thin metal parts, photochemical etching is cheaper, easier and will produce better results. If you're producing relatively simple parts, hand tools and a bit of practice might be more than sufficient.

If I could only have one machine tool, I'd take a lathe any day of the week - it's the only way of producing parts with accurate rotational symmetry and it's easily adaptable to basic three-axis milling. Something like a Unimat SL is really a universal tool for model engineering and the like. Others might choose an SLA printer or a laser cutter based on their particular needs.

It's also worth looking up your nearest hackspace - not many have CNC routers, but most have a decently powerful laser cutter and an assortment of basic manual machine tools.

Return ]

Delete Post []