Bed levelling

Bed levelling

This topic has 7 replies, 3 voices, and was last updated 8 March 2015 at 15:26 by Neil Wyatt.

Viewing 8 posts - 1 through 8 (of 8 total)

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7 March 2015 at 10:45 #31482
jason udall
Participant
@jasonudall57142
err surface grinding….
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7 March 2015 at 10:45 #182447
jason udall
Participant
@jasonudall57142
Bed levelling the next printer…
7 March 2015 at 11:03 #182448
jason udall
Participant
@jasonudall57142
7 March 2015 at 11:04 #182449
jason udall
Participant
@jasonudall57142
You know..one day I might get the hang of this forum software
7 March 2015 at 11:32 #182450
Muzzer
Participant
@muzzer
Looks as if you are using the table drive to self-machine the top surface with an angle grinder. Presumably you also find the grit tightens up the various linear bearings, ballscrews etc?

Looks like quite a beast – what are the dimensions of the working envelope. Can you tell us a bit about it – what drives it etc?

Murray
7 March 2015 at 20:51 #182493
jason udall
Participant
@jasonudall57142
As to grind dust.
Angle grinders dont “shed”..they do wear but not significantly on this duty.. ( I know since I dressed wheel..A first on an angle grinder … and checked wheel during process . Pointless if wheel wore significantly..)

Now the ground down al..
Well as you know the stuff burns in air..so the dust. (What could be found on machine) . was very fine.

THE machine was degreased after..and the wipe cloths checked ( I too was concerned and interested. .)

Well either all the swarf burnt or blew away ..and no grit found.

The recirculating balls were blown dry.
And re greased ( oil really).

It is not maybe the proper technique but the clean up found no contamination. .and no trouble.
7 March 2015 at 20:59 #182494
jason udall
Participant
@jasonudall57142
The drives.
Size 27.
5 amp 48 volt. Micro stepper drives from cnc4you.
.
Superb drives at around 30 quid
And same for the 4 Nm motors..again 30 odd quid
The xy lead screws are 20mm lead 20 mm dia
The guide rails are 20 mm
The x axis uses two motors each with 2 mm 20 mm leads…

The print envelope is 400 x 400 x400..
Travels currently being optimised but print speeds at 50 mm/min.
Depositing 25 mm cube/sec
8 March 2015 at 15:26 #182554
Neil Wyatt
Moderator
@neilwyatt
> the stuff burns in air

To form little bits of aluminium oxide…

Neil
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