New build with recycled parts on a ridiculous budget 120cm*60cm work area

[Desertboy]

Poor photo's but got the final plate today all lines up ;)

I must have made one of the tightest Z axis ever lol





One more plate to collect tomorrow morning (Needed to have 4 10mm holes enlarged got an engineering firm to do it) and we can finally put it all together.

Been very happy with my nema to ballscrew alignement 3 of the 4 are perfect not tried the 4th one yet (Gantry motor) but I'm hoping we got 4 for 4.

The bolts in the Z axis top plate are 1mm too long at moment so need to cut them down as well.

I was worried about the Z plate most of all and it all seems good there's a couple of holes to counterbore in the Z axis but simple job.

I was going to chop my Hiwin's down for the Z axis but I'm going to leave them sticking over the top of the Z axis so if I do want to rebuild the Z I can get more travel, my travel is just over 8cm at moment.

When the top plate was being made an end mill broke hence the nasty bit on the top where the scratches are. The part is functionally perfect and the spindle mount is bolted onto this plate so it's also not visible so it would be pointless to remake and a waste of money.

The scratches I made when I was filing down round where the end mill had broke.

Big thanks to Chaz for making the plates and it was a pure pleasure to see Thor and an experience to feel her move lol, Thor truly is something else.

[Desertboy]

Do the AM882's work with 4 wire nema 23's?

[Neale]

Yes - even 8-wire motors have their windings either in series or parallel so they end up as 4-wire at the driver.

[Desertboy]

Yes - even 8-wire motors have their windings either in series or parallel so they end up as 4-wire at the driver.

Wondering about the stall protection? Do you know how it works?

[Neale]

Wondering about the stall protection? Do you know how it works?

Black magic, pure and simple...

Given that there is some kind of microprocessor in the box, I suspect that it can monitor current draw, back EMF, and critical parameters like that. I know it works, but as for how, exactly...

[Desertboy]

I managed to blag my old man to pay for 2 of my AM882's in exchange for driving 8-10 hours to the docks on Sunday in a week or 2 to collect a truck driver. I can afford another 2 AM882's going to order them on Monday but should I get 3 AM882's and D542T instead? Will I notice the difference putting an AM882 on the Z?

I didn't mention to my old man at the time I will still need a power supply lol, bought a cheap ass breakout board.

My gut is telling me just buy 4 AM882's after all if I have one fail I can get a D524T in 48 hours for £30 and swap the AM882's round to suit.

Of course with AM882's my 2nm look underpowered but my ballscrews are only 1605 so I would need to upgrade to 2510's on the X&Y to be worth also upgrading to 3nm nema 23's or even nema 24's on the Y. Possible future projects ;)

[Chaz]

I managed to blag my old man to pay for 2 of my AM882's in exchange for driving 8-10 hours to the docks on Sunday in a week or 2 to collect a truck driver. I can afford another 2 AM882's going to order them on Monday but should I get 3 AM882's and D542T instead? Will I notice the difference putting an AM882 on the Z?

I didn't mention to my old man at the time I will still need a power supply lol, bought a cheap ass breakout board.

My gut is telling me just buy 4 AM882's after all if I have one fail I can get a D524T in 48 hours for £30 and swap the AM882's round to suit.

Of course with AM882's my 2nm look underpowered but my ballscrews are only 1605 so I would need to upgrade to 2510's on the X&Y to be worth also upgrading to 3nm nema 23's or even nema 24's on the Y. Possible future projects ;)

I dont know the tech details but buy once and buy right.

My own experience tells me this, otherwise it costs more time / money / problems in the long run.

[Clive S]

Buy the AM882's you can then using them on another machine if you want to. 2510 screw will not be an upgrade on the machine you are building. Nema 23's 3.1Nm from cnc4you are the one's to buy.