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As I understand it, the issue would be if the material is a composite of epoxy and granite, sand, or other rocks and minerals. If so, then you would need the diamond tooling to cut through those...

Good morning. I have been working on my mill, tubular steel structure. Once assembled and aligned, it will be cast into a block of simple e/g (for the base up to the y-axis rails), and the column...

So, the issue is not the trucks, but the rails deflecting laterally or away from the mounting surface? Makes sense!

Thanks :)

Why do you think this? Most 15mm blocks have a dynamic load rating of 1500-2500lbs of force in the radial direction. The static loadings are at least 50% higher. If you have the blocks spaced 8"...

Hello, friends. I joined a while back with an interest in getting into the CNC game. But, life got in the way and that interest was pushed off to the side, then others jumped in when things smoothed...

Hello, everyone! I have been lurking for a little while. I have a pretty standard Mini Mill, with a belt drive conversion. I am in the process of beefing up the column, base, and column-base...

I don't have it anymore, but here is a diagram showing a little how it ended up. If I were doing it over again I would have put more thrust bearings so I could really crank down on the bolt torque...

I was actually going to ask about how hard and effective it is to do that.

Ok, I have always been very much into DIY work and have wanted machine tool off and on for a long time. For someone who has no real experience machining, I feel I know a pretty decent amount about...

Of course. But Ive read multiple accounts on here where almost every job can be done without touching the head, using such tooling.

Again very true. For me, I think the amount of "big and fast" work Id do would be greater than the amount of fine work Id do that would require small end mills at high feedrates. But then again,...

I agree. From what Ive seen, the people who seriously persue the use of a round-column mill seem, at the very least, content with them (especially for the price). Their explanations of how to use...

http://www.cnczone.com/forums/showthread.php?t=49044&highlight=RF40

No, not really heh. I tend to stay away from the MR2oc because that community is more focused on politics than the science of automobiles.

Yup.

~24 x ~12.5 x ~16 travel range. Seems pretty similar to the '45 benchtop mills. But man, 1800 KGs?? Whats that, 4000lbs? How much is it? Maybe there is something Im missing, but it seems like there...

Yeah you should be able to do a decent sized surface plate on a mill like that. Were I to build a mill, Id probably use maybe an 8x24 plate, mounted longitudinally to support the y-axis. That should...

The only way you could really do it would be if you had a mill big enough to do the machining on the entire base.

I wouldnt use granite to actually build a mill off just for the difficulty of machining mounting surfaces. If I found one that had rows of mounting points (maybe drilled / tapped holes), Id consider...

I have simple 6-piece 2-flute end mill set (1/8 - 1/2", 3/8" shank) from LMS. Would I bet better off with 4-flute end mills for steel, saving the 2-flute ones for Aluminum?

Yeah, I plan on building a flood coolant system (maybe also with compressed air if the enclosure ends up nice enough) for whatever mill I get. Coolant really is invaluable. Who knew that with...

No, but that doesn't mean it is impossible.


I wouldnt do it if I thought it would be inferior, heh. If I could get 24 x 9 horizontal travel, vs 16 x 6 horizontal travel, Id call that a pretty...

For something like this Id probably use two 15-25mm rails with 2 blocks on each rail. Everything Ive heard says that the rails are usually stronger than what they are mounted to, and I think I could...

Thanks alot :) . This mill, after I get everything sorted out, will be the workhorse of my business. As I mentioned in my other thread, I am tring to get a nice CNC setup going so that I can take my...

Well, HF has shown to be wrong before on their sizes, and even Grizzly shows several different table sizes and travels. Hell, in one listing, they actually list two different travel ranges! So, Id...

What kind of cuts can an X3 take in steels with, say, a 1/2" end mill? Just trying to get a feel for what I will probably end up buying in the next week or so, heh.



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I really am trying to stay in one place :( . But I by trying to learn everything I can, I am hoping to not do something Ill regret.

1) I dont want to buy the X3 and wish I had saved for something...

Yeah on the X- and Y-axes I just meant as far as things like removing material that blocks motion, not necessarily how far off the slides one could go. I wouldnt assume more than an inch off the end...

Philbur, how old is your RF40 mill? It looks different than this one (how the column mounts to the base):
http://www.smidgie.com/928/machineshop/rf40/cnc/pictures/IMG_6458.jpg


Could anyone else...

Why not just fill the drain with a few inches of cutting fluid to act as the reservoir? That way the pump will always have a solid water supply, without needing an extra reservoir. A 24 x 48 trey...