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Im looking at this unfinished conversion to buy. (In NZ $)

What do you think ?
...

Ah yes. I thought about that other option but thought there might be another explanation. I will just mill out the back of the Z plate for the higher ball screw nut bracket. (using a thicker Z plate)...

Ah i was referring to this Korean ebay supplier with the C5 grades.

What confuses me a little, is the total height of the rail and bearing blocks never seem to match the height of the ballscrew...

Thanks so much !
What size square linear rails would you recommend using 20/05 ballscrews ? . I'm guessing I go big just for extra stability ?
I have been advised in the past to go double ballnut...

Well most of that is helpful thankyou but over my head. The details of my motors are in my signature here. The Z axis prob weighs around 20kgs with the spindle.

The link to the eBay z ball screw...

I have used my home built machine for years now with good results. I have 1605 Chinese rolled ballscrews (c7) on my X Y and Z axis. ( sliding bed )
( Chinese 2.2kw water cooled spindle)
Now have...

Thanks everyone

I am used to Europe prices for Aluminium Extrusion . I have checked out one supplier in NZ which is over double the price of Europe even taking into consideration the exchange rate.

Anyone know of...

Thanks Pete for the detailed explanation. I remember after I drilled all the table holes to fit the ballscrew nut and rail bearings, that I thought it odd that I had to make a spacer. . Now I know...

Gotcha. Its been 5yrs since I built the first one. I need to get my head around what ballscrew matches which linear rail on height etc... Is there a table somewhere that show this ?

I might as well go with 25mm round supported rail then like I did on my first machine, and just build a better stronger support for the sliding table rails. This is cheaper. My first machine gave...

Dunedin Craig.

Thats great Peter thanks... They dont seem to have the built units. So the using 25mm rails do I need to put shims on the Ballscrew nut to get the correct height ?. I know I did with 25mm round...

Thanks. Yes alu extrusion again. Its easy that way. You would have to give me a link to a product (if you would be so kind) that describes it visually. Not sure on the quality of this Chinese ready...

Ok. Already had great success with my homebuilt cnc/router for milling billet. Now I have moved to NZ and cant get my machine for a fair while so planning on building another. Same Spec just bigger...

Very old post. I read you have to replace the belt when it slips. have you still got the machine ?

Ok thanks. I found a link to the D model below, but cannot find mentioned the Z max clearance

Denbigh Milling Machines

Not practical for what reason ?. I dont have any tools with me atm. But have a price from someone I know (1400 nzd$) for all parts except motors/belts, electronics which i can do

Not sure if its...

Just found this machine local440538

https://www.trademe.co.nz/business-farming-industry/industrial/manufacturing-metalwork/other/listing-2586061371.htm?rsqid=d00b7b3c270a4675a97665b8e2b89c66-003
...

ah well thats why I said solid. yep bar might have been a better description. When I lived in Europe there were dozens of people who would have done it localy. here in NZ , I cant find any ...

Yes a solid tube. its actually 26mms dia but needs to be 21.5 for the first 56mms. Length is 23cms. Your a bit far from NZ for such a small job Roger.

waist aluminium isnt an issue when modifying...

Hi
Im in Dunedin NZ.

Need a small job done. Ive got a aluminium solide tube around 32mm dia that I need taken down to 21mm

Anybody out there please?

Hi
Im in Dunedin NZ.

Need a small job done. Ive got a aluminium solide tube around 32mm dia that I need taken down to 21mm

Anybody out there please?

Good point. Can you recommend a very good 2D package that cover pretty much everything ? sheetcam ?. I dont really want to have multiple software to do conversions of files. Point clouds from a touch...

I want a cad/cam software package because I have a million other hobbies and don't want to spend too much time figuring it out. (nothing over 500$)
I have tried lots of cad/cam free demos, but I...

I have chance of buying a 1980's Tong-il Korean Knee mill, with No 4 Auto lock chuck and rotary table for 650 Euros. I cannot find any other Mill of this size for the same money anywhere close to...

Any Chance you could compile the Gcode to do the same thing but run the toolpaths like this :

https://www.youtube.com/watch?v=lwy5s8cjoG0&feature=player_embedded&x-yt-ts=1421914688&x-yt-cl=84503534

.

Ah ha, you may have something there. Never thought of the cutting area being outside the stock size. I will try this first. Thankyou

I use Cambam and Emachineshop for most of my work, but I am no expert.
I have downloaded the trial version of MeshCam. I have been using it for the past 2 or 3 days. I am loading some 3D files into...