Diy Brushless Spindle

[HankMcSpank]

I maintain there's a tidy little sideliness/embryonic business for someone with the nous to start supplying these brushless spindles in decent numbers to the hobbyist CNC market.

At the minute a CNC hobbyist is faced with Dremel (eeugh) proxxon (nicer but feeble) ...then a leap up to something like kress (good but probably a bit too loud for most...and the price is starting to get chunky).

I reckon if you could knock these out somewhere in between the Proxxon price level (about £90) & Kress level (£150?) ...there'd be good steady demand.

[Jonathan]

I maintain there's a tidy little sideliness/embryonic business for someone with the nous to start supplying these brushless spindles in decent numbers to the hobbyist CNC market.

I'd happily make lots of them, but I've not got time now with being at University.
I will probably make some in the holidays. The issue is which motor to choose as it's always a compromise between collet size and max rpm. The ideal way to do it is get a motor which will take an ER20 chuck and rewind it to get the required, higher, rpm (well, kv strictly).

[blackburn mark]

i bought a pair of those 708A bearings but never got around to implimenting them as i ended up using the larger spindles most of the time and the skate bearings seem to be holding up to the amount of use that they get

the 8mm shaft motors make sense if your cutting balsa because of the higher KV choices

I maintain there's a tidy little sideliness/embryonic business for someone

i did mull the idea for a spell as i belive the larger brushless spindles would knock the knickers off a kress or even one of those posh water cooled chinese jobs at cutting ali and plastics (especialy so if your finishing with a fly cutter) but i get the feeling most people are after cutting wood on their cnc routers and stick to small tooling to cut the odd bit of alli so im not sure there would be a demand myself

From a quick search on tinternet it seems that most double row angular contact bearings seem to start at 10mm ID

yep! its a crying shame you cant get them smaller :cry: they work like a charm and make the job eeeeasy!!!