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[TheBoy]

My Z axis is generally:

0.3 for very fast test prints
0.2 for daft, or stuff where quality doesn't matter
0.1 for normal

I do have a 0.05mm for intricate stuff, although the specs of my printer suggest 0.1mm accuracy, but suspect that is more in the X/Y plane than Z.  And when ever I get around to fitting my Y tensioner that I printed off ages and ages ago, I'm hoping that will improve.  But that means finding the belt I bought ages ago to replace the stretchy rubber one.  And that means stripping down, which means I may as well fit the braces I printed, and the PSU fan, and, and, and....

[aaronjb]

I did some playing with "magic numbers" based on the stepper and lead screw and the results have been quite pleasing printing at 0.12 and 0.16mm.. currently printing a set of exhaust manifold bends at 0.32 to see what they come out like.

Starting to get to grips with all the settings - one thing I noticed is that Cura was very optimistic on the timings; turns out that's because it is calculating (in part) based on the acceleration settings it has (1800mm/s2, I think .. units might be wrong) while the printer is locked down in the firmware to 350mm/s2 due to the mass of the bed that needs to be moved. Folks reported success in bumping the firmware numbers up (a bit, not to the 3500 of smaller models, though!) and then down in Cura to match, so I'm fiddling with that.

Also modeled a Ford FE header flange in Fusion 360 as I couldn't find a model to steal, and printed one of those - got it dead nuts right first time which I was rather pleased with! Now to make a header flange that will snap into the exhaust manifold sections (https://www.thingiverse.com/thing:2053049)

Incidentally - those manifold sections can be bought as a finished product .. £1500 per set!

[TheBoy]

I did all the "upgrades" I had to mine on Saturday - additional bracing, a X tensioner, replaced the belts with non stretchy ones, and rerouted some of the wires.

The result?  Its noticeably worse

[aaronjb]

The result?  Its noticeably worse

Perfect! Objective achieved 

I added a Y tensioner .. and now the bearing clicks.

Printed this last night, though I haven't inspected it yet (it's still welded to the bed - I do not have any bed adhesion problems .. in fact, half the time I struggle to get the PLA off it! ):

It's an exhaust header flange with snap fitting to mate to the snap-together exhaust manifold template sections

[Kevin Wood]

The result?  Its noticeably worse

Perfect! Objective achieved 

I added a Y tensioner .. and now the bearing clicks.

Printed this last night, though I haven't inspected it yet (it's still welded to the bed - I do not have any bed adhesion problems .. in fact, half the time I struggle to get the PLA off it! ):

It's an exhaust header flange with snap fitting to mate to the snap-together exhaust manifold template sections

I think it's going to melt. 

[TheBoy]

Whacked up my belts to about B flat, and the quality returned.  But its ibcreased the noise, and I have visible flexing in the frame that I cant see how to eliminate

[TheBoy]

Tried a new trick today, doing photos on a 3d printer. Ignoring the clear ringing and an X Shift halfway through (not visible to naked eye), I'm fairly impressed with it....



The original photo was a low res 500x500px, and I printed it far too fast

[TheBoy]

Original Photo used...

[aaronjb]

I've seen a few lithographs online recently - very neat trick 

I just got a spool of ABS in a fetching shade of lurid green, so now I get to do all of the tuning again to see if ABS works any better for the clip-together exhaust template sections than PLA does.. because the little clip lugs tend to snap off with PLA

Can't decide whether to do that or keep dicking around with making stuff in PLA for a bit..

[aaronjb]

I'm trying that ABS print .. so far I can say:

Bed adhesion with PLA? 1000%
Bed adhesion with ABS? Er.. not very.

100ºC bed temp but no treatments like glue stick/hair spray on hand, and now I see why they say that's basically mandatory!

[edit] BTW Jaime (I am not typing your current forum name every time ) what size are the ziplocks you use, roughly? "Large" tend to be 35x35cm roughly, or slightly larger, but that's 'flat' size.. hard to judge and I don't want to buy hundreds of ziplock bags to find ones that fit

PLA is currently in a box with a lid and 1Kg of silica gel.. overkill but I had those bags sitting around from the old garage - just had to dry one out in the oven for a bit.

[STEMO]

Yodel-Odel-a-Eboy.com Yodel-Odel-a-Eboy.com Yodel-Odel-a-Eboy.com

Text replacement thingy......try it Mr IT man 

[aaronjb]

Yodel-Odel-a-Eboy.com Yodel-Odel-a-Eboy.com Yodel-Odel-a-Eboy.com

Text replacement thingy......try it Mr IT man 

Thems too smart a suggestion for mees.

Could we just make the forum software word-filter change every occurrence of Jaime to Yodel-Odel-a-Eboy.com 

[Doctor Gollum]

Your mission, should you choose to accept it... 

[Kevin Wood]

I was seriously tempted to treat myself to a 3D printer for Christmas as there are loads of random bits and pieces I'd like to print out.

The last thing I need is another project / rabbit hole of hours of tweaking and fettling to dive into, however, so maybe I'll give it a miss for now... 

[Viral_Jim]

I suspect in this case (as many others) plug-&-play-ability and depth of pocket go hand in hand.