Good for you, amid all the doom and gloom and horror stories of hoarder and gougers this makes my day! Are you just printing brackets or do you have capability to make the shields as well?

So a final followup....

I wound up replacing the block, nozzle and heat break and have had very good success printing PETG but it's been quite the journey.

Currently printing white filament and very random black/brown blobs appearing they float on the surface so I am assuming it's filament that has stuck to the nozzle, cooked and come off as I don't see any signs of leakage.

@mpirringer Good luck in the competition, that looks like quite the project.

@spaceghost1911 This is the link I have for Github: https://github.com/MatterHackers/PulseOpenSource
Hope this helps

@mpirringer Thanks for responding, my research was suggesting a leak from the nozzle, and when I removed it, it seemed loose although I had followed the prescribed procedure for changing it it. The silicon sock had a thin black layer of filament inside it as well. I chose a hardened steel nozzle on a whim which shows what happens when I skip the research stage, but I was so happy to be getting actual prints from it...finally,

So a new brass nozzle has been installed, bed leveled and z offset calibrated and first print it sets down and attempts to etch the initial laying into the my print plate. Oh and with the new filament (red instead of blue) it keeps stopping and telling me it's out of filament. Just not winning these days....

Getting back to printing again after some time away and still working with PETG material, what I have done since my last issues:

• Stored my filament away in Printdry airtight container with fresh desiccant packages

• took a month off from printing

• Returned, replace existing ruby nozzle with harden steel nozzle. The ruby nozzle seemed very clogged when examined.

• Reduced the temp of my dryer to 140 from 160 and returned the PETG to the dryer for 16 hours before starting again.

• Leveled the bed and calibrated my Z height.

Lo and behold it's printing again, test pieces came out okay, spaceman is much better but not perfect, Printing is so tight I found a small flaw in a design where I thought I had a solid wall turns out there is a small small gap between two pieces in the design.

What I have now is black blobs appearing in the build and it seems to be causing the head to stick hard enough to shift the Y axis enough to skew the printing .

Original project looks pretty good, prints flat with no warping. You can just see the gap between the inner and out walls.

Black blob..not pretty

Smeared into lid.

More blobs, gear shifted radically, should be stacking up in a helical pattern.

These blobs are concerning and ugly, and destroying the print. One box shifted 3/4 into the print. So it's almost there and printing much better but I am still missing something.

Thanks for all the help so far, I cannot control the environment, humidity hovers around 25% but can drop to 11-12% depending on the weather. Room temp is around 24C, printer enclosure can reach 33C when printing is going on. Filament is stored in PrintDry containers or in the PrintDry heater.

@pverdin This is Nylon G, right out of it's air tight container and into print.

Not sure why the colour went from white to this nicotine yellow, does it not age well? Either way it printed nice and clean, I leveled the bed and calibrated my Z height and this is the result.

I can't do everything in Nylon G, so need to resolve why PETG failed.

@erikescudero Sorry, I forgot to mention I employ a Printdry system, the filament spent the weekend drying before I started and it remains in the drying with the heat running.

Having moved on from PLA to PETG I must be missing something basic here. My calibration blocks and test looks pretty good.

Thinking I am a roll I go to print a space guy, my final go to:

The half guys are when I stopped the print, the supports are easily picked out and are crumbly. Nozzle temps between 235 - 245. I have great adhesion to the print be at 80 degrees.

Starting to suspect a nozzle failure but it's a relatively new Ruby that has about 2.5KG of NylonG through it.

So I am not sure what the heck I am missing but it's getting really frustrating.

@mpirringer Thanks, I will look on Thingverse and see what I can see, I have put PLA on the back burner for now.