If you can swing it, the CNCRP Pro machine is a much better choice.
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Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
It is a little heavier duty machine.
Lee
Based on the linear bearings on the Pro machines.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
***I think I posted my original thread into the wrong sub category. Hope this one is more appropriate for my question.
I'm ready to pull the trigger on one of these two machines, but cannot make up my mind. I hope some of you can assist me with this decision by sharing some of your experience and knowledge between these machines.
Little background, I'm a hobby carpenter and will use to machine mostly to make one off parts or .... the more likely option ... make BS parts with no real use.
I'm looking at the below (2) models with options:
$4,699 - Probotix Nebula
$120 - Z-Touch off Puck
$4,819 = Total
$2,595 - CNC Router Parts CRP4848
$1,560 - Plug and Play Nema 23
$229 - Track Kit
$130 - Auto Z Corner
$170 - 80mm Spindle Mount
$4,685 = Total
I'm not including the Spindle cost in either one.
I understand the Probotix also includes a PC, which I think I can put together for about $400 if I were to go with the CNC RP one.
I would greatly appreciate anyone's input. If there is a better option for under $6k, please let me know.
The OP specifically asked about the CRP series. We have a CRP series machine that we use to cut the spoil boards and the dust troughs; and there is nothing they can do that our Galaxy series machines cannot. In fact we are constantly having to adjust the cold rolled bearing mechanisms, and the machine is not near as precise as our Galaxy series machines.
I had to laugh at some things with the probotix. They claim using ACME screws is an advantage over ball screws, because it means they don't need to use a lathe... Buy a lathe guys.
200ipm rapids is sloow.
Round rails
Weak gantry.
Not worth it
He also asked about alternatives for under $6000.The OP specifically asked about the CRP series
The CNCRP Pro machines is far superior to your machine and the standard CNCRP machine.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Might be a little bit higher than your budget, but the FLA Saturn 4x4 would worth a look.
This is a MUCH better machine than the other 2 you're considering OP. It will be orders of magnitude more rigid and capable of running without adjustment for quite some time. They also currently have a 25% off sale on this machine with free shipping. I don't think you're going to find anything that competes with it, short of looking at the used industrial market and waiting for the right machine to come along. The CNCRP PRO line is also very nice, but the FLA Saturn is likely considerably more rigid, as it has a welded steel frame.
With all due respect, sir... "superior" is not a technical term that can be quantified. If its not more rigid (its not) or more precise (its less, actually because of the rack-n-pinion), or more reliable (nothing is more reliable than LinuxCNC and American made controls), then its not superior in any way that means anything to the user. On top of that, the Galaxy series machines are precisely assembled before they are shipped, which could make the biggest difference if you are one of the many who don't have the time, skills, or maybe tools to assemble such a machine in a precise manner.
The Galaxy series machines are not for everyone, perhaps not even you. But they are a very high quality product that fills a specific need in the market. Writing them off as inferior "because I said so" is not accurate, nor helpful to anyone.
I'll just stand by my statements...
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I don't think having just the lower frame in steel makes it any more rigid than aluminum. It still uses an aluminum gantry and beam, so that is where steel would make a difference. It is no more rigid than the CRP pro version.
Plus the bracing on the gantry is just awful design wise. At least the two in the OP have decent designs.
Lee
You don't think the linear rails on the FLA are far superior to either the probotix's (the gantry on which seems a little whimpy to me too) or the standard cncrp (which the OP referred to)?
edit: I don't think any of them are bad machines, just that for around the same price, I find the FLA superior. Personally, I would save up for a CNCRP pro 5x10 though
Yes. Better than the two in the OP.
No better than the CRP Pro with profile rails too.
That said I have not read the ball screw specs on any of them. They may or may not be better than the R&P on the CRP machines. I use the older style CRP pro with the v bearings and it along with the R&P is plenty accurate for our needs. It is a stout little machine.
Lee
Out of curiosity; would the Pro version or FLA model add any additional machining capabilities? ie AR lower?
I would not think either would be strong enough or accurate enough for that. Either would probably machine aluminum easy enough, but my understanding is you need some long tooling to machine those things. Just a WAG on my part. I haven't tried it.
If either had a steel gantry and risers, then you might be closer to the rigidity required.
Lee
In that case, if I only stick with wood projects does the difference in rigidity between a pro and standard make that much of a difference to warrant the cost difference?
Btw, I'm planning on purchasing a spindle instead of a router.