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Old thread but this might help the OP or others trying to or wanting to do this.

CAUTION! Be very careful doing this and always be behind a safe barrier when pressurising and whilst there is any...

Yeah they did have that on the listing but I didn't pay for a "boat anchor", I paid for a milling machine and these major defects were not listed in the description, if they would have been I would...

Thanks for your thoughts Dracozny. I should note that Titan Machinery is actually a company in Australia (Titan Machinery | Mini Lathes | Metal Lathe | Sieg and Bench Lathe) but also sells on ebay.
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Anyone???

Hi all,

I recently bought a brand new Titan TM25V Mill from Titan Machinery off ebay last month with the plan to convert to CNC eventually after making all the brackets etc manually (have bought...

Bump... Anyone??? Is FC flooring stable enough?

Most of the stand is welded up, just need to do the draws and feet. It's on castors and not a single rock in the frame, nice, square and flat.

What are people's thoughts on using FC floor sheeting...

Is there going to be any problem with running the CO ball screws onto of the X axis 80x40 + 16mm frames? Also any problem with running the Y axis ballscrews on the back of the gantry?

Cheers for...

This is where I'm up to...

http://i1337.photobucket.com/albums/o661/Suitable1/CNCpreballscrews_zps7156a15f.jpg
...

Makes sense! I used hours as most machine service go by hours. If they last that long well they are perfect for the job!

Well I have all the steel for the stand etc ready to tack up and weld...

Hmmm yeah that's about 300-800 reasons per ballscrew why to use belts instead! I'll be triple checking everything before each use anyway so it shouldn't be too bad. I should have the gantry...

Picked up the rest of the steel for the bench today ready to start welding it up this weekend! :D

Good point. I need to get this plan finished so I can work out the physics before ordering (hopefully by next week... There's a 3D printer show next week so might be able to get some good deals on...

Very true! I need to finish drawing up the design in sketchup to work out the weights though. Working on finishing the new rails/trucks drawings and the gantry at the moment... Slowly getting...

Awesome! Thanks! I just spotted the coolant tank in the build thread. Looks like a good feature.

I get what your saying about the 4 rails. I think I might downgrade/upgrade the X axis rails to THK...

I should also mention that every fixing will have loctite on it be it blue or red depending on the parts that's being fixed... If that makes any difference to anything at all... :/

Yep. That's the one! Thanks!

Thoughts on the THK bearings? And gearbox?

Thanks for the info!

What about incorperating 2 x planetary gear boxs of say 20:1 and 32:1? This should give me 1200 rpm down to 37.5 rpm from running the spindle at 24,000 rpm. Then all the way down to 400 rpm and...

Yeah I see what you mean now. 0 RPM meaning off and 8000-24000 being workable speeds... Chinese truth or Chinese whispers lol... :/

Can anyone recommend a decent, reasonably priced spindle motor...

Hmmm....

The 3kw spindle I'm looking at is capable of 0-24000 RPM and 0-400Hz? 3KW Water Cooled Spindle Motor 3KW Matching Inverter New 5 | eBay

I'm not using a router for this, it's a...

I forgot mention... The top plates for the X axis rails that will be on top of the either 40x80 or 80x80 extrusions will be slotted for finer adjustments to hopefully eliminate any binding in those...

Hi Gerry,

Thanks heaps for the info!

I'm planning to have all the aluminium plate cut out, drilled, chamfered and the surface skimmed by CNC at a local engineering shop that has the machines to...

Hi all,

I am in the middle of designing a 3 axis CNC mill/router and eventually a 4th axis to make out of T-slot extrusions, 40x80, 80x80 etc plus partially encased in 16mm thick aluminium plate....

Cool.

Yes, I'm still learning the lingo :o ...

Mounting the 4 axis onto the T slot table would give you the largest swing over depending on the mounts/brackets you use/make would it not?
...

WOW! Really nice work! Congratulations on your retirement too!

Do you have any photos of how you incorporated the 4th axis in to the machine?

Also have you used 2 stepper motors/lead screws...

Hi Rod,

This build is looking very tidy!

How is it coming along? Im eager to see some more photos of the finished product and maybe a video if you get the chance!?

Did you use lead screws...

Wow that's a nice machine! Maybe one day...

Your defiantly right about the old Hardinge, and figured it would need a lot of $$$ to make it useable again but again it's not in the same league as...

There is also this 1975 Hardinge Model Makers Lathe for $1500 http://www.machines4u.com.au/view/advert/HARDINGE-Model-Maker-s-Lathe/124659/

If your saying ~$80K new price this must be clapped out...

So for $2k~ you get a ~$2k lathe, just have to work out the woes and setup as much close as possible. So you can machine grind the bore slightly to increase its accuracy?

What do think of this...

Underthetire: Very true! At this stage, all I can go off is online reviews. Through reading that Sieg C4 review (whilst he did mention that the dial indicator needle barely moved at all and 0.00002"...