Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
Thread Tools
Old Oct 31, 2012, 05:55 AM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
Quote:
Originally Posted by Taget View Post
This looks great. I really want to get into CNC but most of the prices have been cost prohibitive. what are your thoughts on this for a newcomer ?
Yeah if the money isn't there, then success will he hard. But if your handy, you could get going and save some money. It helps to have saws, drills, bits, a square, angle grinder, etc...


I bought some steppers from mpja.com, and drives (cw250) from circuitspecialists.com, a power supply from Ebay. And I built my new table for a few hundred.

Even a Bluumax and a copy of Mach3 will set you back $650. There is a lot of info on doing CNC for cheap on CNCZONE.com. Problem is a few more hundred dollars always gets better performance, so you always want to spend a few more hundred. Search cnc cookbook for basic cnc knowledge.
Sign up now
to remove ads between posts
Old Oct 31, 2012, 09:43 AM
vtdiy is offline
Find More Posts by vtdiy
low tech high tech
vtdiy's Avatar
Quote:
Originally Posted by geostomp View Post
Even a Bluumax and a copy of Mach3 will set you back $650.
I use TurboCNC, which is free. Not as nice as Mach3, but will certainly get the job done.

If you like to build things, HobbyCNC.com packages will get you the electronics and steppers with more torque than the Bluumax. A scrounged computer power supply can drive it.

If you go the usual homebuilt route, skateboard bearings and some metal, threaded rod and wood will get you a basic machine that will drive a Dremel or equivalent, and is expandable.

Probably $400 or so using TurboCNC.
Old Nov 04, 2012, 05:12 PM
Rifraf is offline
Find More Posts by Rifraf
Registered User
Subscribed. I've been eying the Bluumax. I am looking at what you have done and am trying to piece together in my mind what would be the best investment. I am curious if I should get the package with no electronics, and get upgraded drivers and steppers right off the bat. I have seen numerous mods for stiffening the gantry. Perhaps it's just worth it, for the cost.

One mod that would seem important given the design, would be a skirt of some sort to keep shavings and crud off the lower rails.
Old Nov 05, 2012, 05:42 AM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
For me, it was a great machine for instant success. But it is not a one size fits all. I learned the basics with a working machine on my table (Bluumax) which made it fun. If I knew then what I know now I would have built my machine. That is not to discredit the Bluu', I just would have had a hard time building one at the time without loosing some hair.

One of the biggest sources of backlash is the motors themselves. The motor shaft will move radially under enough pressure. I had this problem even with my new upgrade motors on my upgrade machine.

On my new machine, I took the motors apart and removed a spring washer and replaced it with rings of heavy card stock. I used just the right amount to pretension the motor bearings and now I have eliminated that backlash.
Last edited by geostomp; Nov 05, 2012 at 05:53 AM.
Old Nov 05, 2012, 05:58 AM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
Here I am working on my new jet with my upgrade CNC.

ReVolt R/C Jet Development (0 min 45 sec)
Old Nov 05, 2012, 07:44 AM
vtdiy is offline
Find More Posts by vtdiy
low tech high tech
vtdiy's Avatar
Quote:
Originally Posted by geostomp View Post
On my new machine, I took the motors apart and removed a spring washer and replaced it with rings of heavy card stock. I used just the right amount to pretension the motor bearings and now I have eliminated that backlash.
Wow. Hard core DIY!
Old Nov 05, 2012, 01:54 PM
Rifraf is offline
Find More Posts by Rifraf
Registered User
I just picked up a controller, power supply and 3 NEMA 23 280 oz motors from A Quick CNC on eBay. Looks like they are a kick starter group. They also have a funded building system of a full Z axis and building blocks for the rest of the table, but I am not sure they are going to be available any time soon. I like the idea of linear bearings and rails instead of skate bearings on tube. For that reason, I am leaning slightly toward the Fireball V90, or seeing if I can build some of it myself.
Old Nov 05, 2012, 06:26 PM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
Quote:
Originally Posted by Rifraf View Post
I just picked up a controller, power supply and 3 NEMA 23 280 oz motors from A Quick CNC on eBay. Looks like they are a kick starter group. They also have a funded building system of a full Z axis and building blocks for the rest of the table, but I am not sure they are going to be available any time soon. I like the idea of linear bearings and rails instead of skate bearings on tube. For that reason, I am leaning slightly toward the Fireball V90, or seeing if I can build some of it myself.
I ordered from aquickcnc myself as well. Great to deal with and a neat selection. Yeah, sounds like your off to a good start.
Old Nov 17, 2012, 09:25 AM
Taget is offline
Find More Posts by Taget
Registered User
Taget's Avatar
I pulled the trigger on a Bluumax machine. Almost ready to test everything out.
Old Nov 18, 2012, 08:59 AM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
Quote:
Originally Posted by Taget View Post
I pulled the trigger on a Bluumax machine. Almost ready to test everything out.
Awesome, great to see another Bluumax in this thread. I would suggest .020" depth of cut (stepdown), .050" stepover(offset of next pass), and about 20-30 ipm feedrate on a 1/8" endmill. That will ensure the cutter doesn't bite more than it can chew. A carbide endmill will help a bunch.
Old Nov 18, 2012, 04:25 PM
jh2rc97 is offline
Find More Posts by jh2rc97
Registered User
I received a Bluumax last week. Might be a while before it is all together but sure looks like alot of fun!

Alan
Old Nov 18, 2012, 04:31 PM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
Quote:
Originally Posted by jh2rc97 View Post
I received a Bluumax last week. Might be a while before it is all together but sure looks like alot of fun!

Alan
Cool! Can't wait to see what you do with it.
Old Nov 19, 2012, 05:22 PM
Taget is offline
Find More Posts by Taget
Registered User
Taget's Avatar
Assembly and getting everything wired and working was a snap. Running a cnc system is not there is deffinately a learning curve and im trying to digest alot of what i have read and been trying with mine. So far i have managed to draw a spiral and a snowflake from pre canned sample g-code and one peice i made in sketch up. For a first time machinist i think that all of these home cnc router kits should come with sharpie attachment, much safer

All in all im really diggin it. Once i get my skills up and gain some confidence i will attach the dremel.
Old Nov 20, 2012, 08:12 AM
geostomp is offline
Find More Posts by geostomp
ReVolt- Proprietary Insanity
geostomp's Avatar
That's the way to do it.
Old Nov 22, 2012, 07:22 PM
Taget is offline
Find More Posts by Taget
Registered User
Taget's Avatar
Still getting the hang of this machine. Had the machine draw a few gears and a rough attempt at Mickey Mouse, at the kids request. The more i use it the more my comfort level increases.

Added home switches to my machine on all axis. One is a lever switch from Radioshack and the other 2 switches are reclaimed power switches from computer cases. Cheap fix but needed to add software debounce to make up for the low quality of the switch.

Who else is using LinuxCNC(emc2)? I am a big fan of open source software. I am really glad i found this thread, as i had never come across this machine until then.

Cheers


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log "done by ourself" cnc router and hotwire cutter.now with video. clausxpf CAD/CAM 23 Jan 05, 2013 06:58 PM
Question CNC router Kit ? marcel76 The Builders Workshop 6 Feb 21, 2009 05:50 PM
Found Allegro UCN5804b stepper controller chips for cnc router or foam cutting stealthy Aircraft - General - Miscellaneous (FS/W) 0 Feb 05, 2006 09:46 PM
CNC router kit choice? Coder The Builders Workshop 3 Oct 15, 2002 09:45 PM