Heaven help me - I've just bought a delta kit :-)

[curious aardvark]

Ah ha - okay, also found the threaded m4 10mm ball bearings.

okay under £5, altogether, for 12 threaded 10mm ball bearings and 12 magnetic cups :-)
Bought m4 bolts yesterday as i found some really cheap t-slot nuts with m4 thread.

Have to admit I like getting all these little packets from china.

Currently thinking about a volcano hotend with 3:1 gearing - like what autowhiz uses. Not cheap, but I'd like to use my little nema 14 motors. Haven't tried one yet, might not need gearing.
Struts should get here today.

So with threads balls and magnetic cups - should work really well.

that perspex on the carriages looks very thin and flexible. Is that a good idea ?

[curious aardvark]

10mm with a hole in the middle ?
can't weigh more than a few grams.

[curious aardvark]

does it matter what the shafts weigh ?
No idea what you've done (no pics ;-)
I'm just thinking those magnetic cups on the effector and carriages and a ball each end of the shafts. Love the fact that i can just print a glueable insert to stick a 4mm bolt in and just screw the ball bearings on the end of the shafts.
Much more secure than trying to attach complete ball bearings.

I can cut the heads off the 4mm bolts with my bolt cutter dead easy. Tap that into a shaft insert, dab of superglue to lock the ball bearings in place - jobs a good one :-)

Oh yeah, missed delivery guy - so struts getting here tomorrow.
I'll ductape it together for a pic and to get some idea of the sheer size of the Big Bastard :-)

[curious aardvark]

Unless you're going up to a much larger nozzle size - can't see it making much difference.

Got my struts:

She going to be tall :-)

longstruts_176x480.jpg

30x30 seriously heavy duty feel to it.

horiz1_640x150.jpg

horiz2_640x372.jpg

And standard 6mm t-slot nuts work just fine

6mmt-nutswork_640x480.jpg

Corner pieces are going to be beasts, on reflection should probably have got longer horizontals.
we'll see.

Leg's improving slowly, so i can actually sit at the desk a bit longer each day.
I think I'm just missing wheels and belt gears now, and all the stuff in transit from hong kong and china :-)

[curious aardvark]

as far as I know lol
Any reason they shouldn't be ?
IT was seriously well packed.
They all line up and look perfectly straight.
They didn't come from china - just about 30 miles down the road.

I actually went for the lighter extrusion - but even that's seriously heavy duty, and about £20 cheaper.

Bolt a couple spikes to the 415mm lengths and you've got a seriously heavy duty hand weapon.
Lengths are all bang on for the shorter struts.

[curious aardvark]

like I said they look straight. line up with no obvious gaps.
This isn't cheap chinese or american manufacturing - proper british engineering mate - they are straight ;-)

[curious aardvark]

16:37:28.475 : N19 M105*31
16:37:29.630 : N20 G29*32
16:37:31.533 : N21 M105*20
16:37:34.606 : N22 M105*23
16:37:35.199 : Info:Autoleveling disabled
16:37:37.664 : N23 M105*22
16:37:40.004 : Z-probe:80.64 X:-66.00 Y:-38.00
16:37:40.721 : N24 M105*17
16:37:43.779 : N25 M105*16
16:37:46.837 : N26 M105*19
16:37:49.395 : Z-probe:80.64 X:66.00 Y:-38.00
16:37:49.894 : N27 M105*18
16:37:52.952 : N28 M105*29
16:37:56.009 : N29 M105*28
16:37:58.678 : Z-probe:80.65 X:0.00 Y:66.00
16:37:59.068 : N30 M105*20
16:38:02.126 : N31 M105*21
16:38:02.734 : Z-probe average height:80.64
16:38:02.734 : Info:Autoleveling enabled
16:38:02.734 : X:0.00 Y:66.00 Z:50.100 E:0.0000

so what am I supposed to do with these ?

Plate is physically level - just 1, 100th of a mm difference between all three points.

There is an autolevelling option on the printers control panel as well.

But from what i can gather you have to move the head around manually and Ive never had much joy with that either :-)

Okay i tried it once and seemed like a pita.

[curious aardvark]

Z tower endstop offset in the Eeprom settings round off to the nearest number.

lost me there.

Have yet to mess with that kind of thing. No the the first clue where that lot is.

Given that it never actually probes anywhere but three points on the outer rim - i there actually any point in doing a topographical 'level' with so few points ?

First test corner piece came out perfect :-)
Strut is snug as a bug in a rug !

[curious aardvark]

I'll give that a go when I'm not printing something.
cheers

Got me calculations way off for the first cornerpiece.
Ended up with internal angle of 120. So currently printing - hopefully - a 60 :-)

Next need to work out where the belts are going to go.

[curious aardvark]

Corner piece comparison: 30x30 struts for the Big Bastard versus 20x20 on the he3d k200.
And yes i know the holes don't line up on that corner piece- they will on the next one :-) Why they're called - 'test pieces'

cornercomp1_640x360.jpg

cornercomp2_640x480.jpg

cornercomp3_530x480.jpg

cornercomp4_640x213.jpg

Have to admit, till I did a direct comparison just now - I hadn't realised just how much larger the 30x30 is :-)
Cue manic laughter: 'hahahhahahhaha !!!!!! She going to be a monster !'