[LUCKY13]

I will mill some aluminum with small carbide cutters (<10mm) And I don´t want to be at the spindles max speed all day long. But maybe there is some margin to the 5100rpm

There is some. But the truth is if you want higher rpm you will need to add bearings that are able. The IH spindle would be a good way to go, plus afforable. See if they will sale it wihtout the bearings so you could buy better ones. Getting a spindle to run high RPM is not the easest thing to do, good bearings a must, then the right install, plus break in.


The guys that sale the IH clone would sale you a spindle without the bearings I believe, if IH want. The Tormach you would have to post in the Tormach section to find what the guys are getting for top RPM with the factory bearings. I know some are getting higher, but I am not sure how much.


Jess

[DSpeck]

Since the Tormach PC770 will do 10K rpm, see if you can get one of those spindles, or the cartridge spindle and the upgraded bearings for the 770 spindle. Are you going to make an ATC for this mill?

[thewho]

I would like to have a atc, but for now I will use the mt2 spindle shaft I have already.

Todays update (really yesterdays update)
I started making a new spindle housing to make room for two ac bearings at the bottom.



Pics are crystal clear as always with a mobile camera :tired: sorry for that.
I'm really happy with the insert holder from ctc tools btw :banana:

[thewho]

Last nights progress:
Drilling holes for the mounting screws

Done:



As always I bored the upper bearing seat a hair to much.. (chair)
Maybe It will work with some locktite?

[Gundawg]

As always I bored the upper bearing seat a hair to much..

I hate when that happens maybe you could drill through the sides in 3 or 4 points and tap for some set screws to tighten against the bearing so the bearing is held tight just a suggestion.

Mike

[T.W.O.]

Bore it further out and make a ring to fit the bearings.
PS: very nice project.

greetings & good luck

[will gilmore]

Last nights progress:

As always I bored the upper bearing seat a hair to much.. (chair)
Maybe It will work with some locktite?

there is loctite especially for this purpose.

[LUCKY13]

Bore it further out and make a ring to fit the bearings.
PS: very nice project.

greetings & good luck

Yes, this plus the Loctite meantioned will take care of this. You need to sleeve/ring it or you will not hold the bearing right, so no set screws. BTW this would b exactly how someone would repair a part like this that had the bearing spin and eat the housing out.


Jess

[Gundawg]

Yes, this plus the Loctite meantioned will take care of this. You need to sleeve/ring it or you will not hold the bearing right, so no set screws. BTW this would b exactly how someone would repair a part like this that had the bearing spin and eat the housing out.


Jess

Maybe I am the only one who actually looked at the pictures does it look like there is enough material to bore this without the threads breaking through? A sleeve is the obvious way to fix an oversize bore if you have the wall thickness to make the bore bigger.

Mike

[LUCKY13]

You have a point there, doesnt seem to be enough room. IDK about counting on locktite along to hold the bearing right. I wander if the bearings can be ordered a few thou oversize?



Jess

[thewho]

To clear things up, its the upper end bearing seat that is to big. Not the "business" end

[thewho]

Small update. I've started with the electric cabinet (?)

These are the transformers I'm using

[thewho]

It has been a while since the last update but the machine has now moved for the first time. (video in the end)

Done some tapping (chair)


Some electrics

Machined some of the parts


Seems to fit



Bought a cheap face mill 55eur with 10 inserts

Paint


Finished the spindle. It's just a mt2 for now




Starting final assembly



Tried out the new mill, works great






The 1.5 kW motor













And the video :banana:
[ame=http://www.youtube.com/watch?v=4coobzRqONg]3 Axis test.mp4 - YouTube[/ame]

[Zygoat]

looks pretty darn good. how did you get the shiny surface on the e/g?

[TOTALLYRC]

Looking good,
Can't wait to see it do some machining.

Mike

[thewho]

Shiny surface?

[Zygoat]

like in this pic

[jasminder]

like in this pic

He already wrote that he got a huge piece of granite for the base. It is granite not the e/g.
(check his initial posts)

[thewho]

Heres a late update for you.




[ame=http://www.youtube.com/watch?v=kunIWL1Hqj0]Way covers - YouTube[/ame]

Milled the table flat (not with the mill in the spindle)

First real project with the mill. New pulleys for a HTD 8m belt.
I broke my last 4mm mill when milling the second pulley and now I have to wait for new to arrive..

Did another project while waiting




Had some problems hehe..



Didn't get a awesome surface finish..


[ame=http://www.youtube.com/watch?v=8EG2zOxmVeM]Cutting test 50mm face mill - YouTube[/ame]

If you want the latest info you can run this page trough google translate
Svenska ElektronikForumet • Visa tråd - Daniels stora fräs //It's alive! Nu med film

[RotarySMP]

Cool Build Thewho. Great to see someome doing something in Mineral epoxy rather than just theorising over it.

In Post #7 it looks like you used a pneumatic vibrator attached to the mould http://i1186.photobucket.com/albums/...926_215812.jpg

Is this the design with the bearing ball providnig vibration? How did it work out for you?

What were your thought about putting the unfinished side of the EG saddle uppermost? I would have thought that the unfinished part of a mould would be better hidden below.

What was the mould material? What mould release agents did you use, did they work well?