Tweet
Originally posted by dingbatca
View Post
-
What CNC do you have? I'm looking for something 40x40cm or more.Last edited by Carl-NC; 05-02-2021, 05:01 AM. -
Getting a little off topic here.
CNC's have/are my main hobby. I have been building them for around 20 years. This is my secound DIY "kit" style CNC. All others I designed and built from scratch. The AvidCNC Benchtop PRO 2436 2' x 3' CNC Machine Kit is my 13th CNC. She has a working space of about 660mm X 955mm. Please feel free to PM question, or we can startup a new thread. -
I looked at the Avid products, that's a bit above my budget. Looking for something closer to $1000. Ever try a Bulkman WorkBee?
My immediate need is to cut coil winding bobbins out of phenolic board, up to 18" diameter. Eventually I want to cut vacuum molds for coil shells but I need to build a vacuum former first.Comment
-
Cost VS performance-accuracy is the game you will be playing. I try very hard to stay away from anything belt, or V-Groove based. CNC's generate a LOT of sawdust. Belts/V-Groove just don't get along with dust. Screws and linear slides do a bit better.
But, on my 3D printer, I love belts. But I still stick with linear slides, not V-Groove based wheels. This is more based on personal preference. I know V-Groove based wheels, when setup correctly, and kept clean, can do a good job.
All of this is based on your needs. Yes, it is possible to get a low end CNC, and make it almost perfect. But you will invest a LOT of time in that game. Have you taken a look at the "QueenBee PRO" kit? Might be a good compromise on cost VS accuracy.Comment
-
The QueenBee appears to be a stiffer rail upgrade for the WorkBee. Apparently for the larger versions the WorkBee can have some flexing issues. WorkBee uses screw drives though I'm unsure if they are 8mm or 12mm. I've read both. Been reading forum discussions on all this. For what I need to do accuracy is not paramount and I can slow things down to help. My thought right now is a 1mx1m WorkBee to get started, upgrade to the QueenBee rails if I find I need to.Comment
-
From experience building and using CNC routers, I would add some notes which may help.Originally posted by Carl-NC View Post
8 mm screws IMHO are way too light for a router. 12mm are fine for the size bed you are looking at.
Choose a good spindle with variable speed and changeable collect sizes , say 6,10 and 12 mm,
Rigidity in the spindle mount and rails is paramount to reduce chatter and help prevent snapping bits.
cheersComment
-
I built an MPCNC from V1engineering. So far it does everything I need.Comment
Comment