Newbie looking at 6040 (China CNC) for polypropylene 15mm sheet

[JOGARA]

Bit of Googlering and a few people are saying that it is M8 that one wants.

Yea shipping on KJN.


RS does some extrusion stuff though, these look about right?
https://uk.rs-online.com/web/p/conne...nents/3900379/

[Snapper]

Bit of Googlering and a few people are saying that it is M8 that one wants.

Yea shipping on KJN.


RS does some extrusion stuff though, these look about right?
https://uk.rs-online.com/web/p/conne...nents/3900379/

You don't want m8. You will constantly be fighting to get the bolts through the slots and threaded in the nuts and there is absolutely no need for that much clamping force. M4 or m5 will be just as good, I used m6 because I have a tonne of m6 fixings in all sizes which is important. If you use rs the ones linked or these are the ones you want but not in m8.

https://uk.rs-online.com/mobile/p/co...nents/3900256/

You also don't want to be thinking about using anything 3D printed if accuracy and repeatability is what you're after.

[Snapper]

Just a thought here which I should have thought of sooner. You are aware of the sheer weight of a proper machine vice? I don't think the flimsy hollow extruded aluminium table that comes on the OMIO will give you much improved results. The bed will dip and probably bounce around like a trampoline. Think about that and try some tests before you actually use the vice and can no longer return it.

[JOGARA]

Just a thought here which I should have thought of sooner. You are aware of the sheer weight of a proper machine vice? I don't think the flimsy hollow extruded aluminium table that comes on the OMIO will give you much improved results. The bed will dip and probably bounce around like a trampoline. Think about that and try some tests before you actually use the vice and can no longer return it.

Had that thought to. Trying to have it close to the vertical frame.
Should have just bought a Tormach...

[JOGARA]

Dam this thing is large. What have I done... xD


[edit]

My bed is out by 0.5mm in some places :/

I have worked out how I am going to do it. Ill remove the old vice and center this one and get it all nice and level.
To hold my parts, as the top of the vice is so high up, I can just cheap and use a big sab of 15mm as my part spoil 'board' to mount it on like before, but it will sit deeper into the vice with 40-50mm either side of it to prevent the spindle crshing into it.

[Snapper]

Dam this thing is large. What have I done... xD

Maybe puts into perspective how feeble the OMIO is in real terms and what you're wanting to make it do

Seriously, put some thought into a dedicated fixture and maybe save yourself a few hundred quid in the process. That big hefty unit is a firm sledgehammer to crack a walnut sort of job.

[JOGARA]

Plate done and vice mounted.









Yes, I could do with larger OD washers. These were all that Screwfix had and the Fixings store I normally go to is now miles away as we moved. That and he closes early xD
The M8 extrustion T-nuts from RS are fine. The bolt is hard to start threading into them but once you have it they really do help.
I think the M6 would have been a bit to small as that would have meant smaller washer too. These things are not going to move.

Z is 0.2mm high at one side of the vice on the Y-axis. X-axis there is no difference.
The Y-axis measurement was taken 350mm from the back of the vice to the front. Most of my parts are sub 100mm so that should be more than fine?

The vice is square or within measurable tolerance with the probe and dial indicator.



It also looks dank af... I get points for that no?