Stuff your 3D printer has made today...

[m_c]

The meter will show relative humidity, so warming any given air up without increasing the available moisture, will result in a lower humidity reading.

However the issue with PETG, is that it absorbs moisture, and it's that moisture that causes print quality issues, as it steams off as it goes through the hotend causing inconsistent extrusion.

 

[skotl]

Ref my thread on humidity, I was having mixed results with PETG but realised that my (generic) "SunLu" enclosure was lying in the other room, which kinda defeats the purpose.

So I've restarted a failed print with the printer inside the enclosure and put the Sonoff temp & humidity sensor inside the enclosure:

View attachment 440053



Seems these enclosures work!

Now if I can just get one big enough to wrap my garage...

My faith in PETG has been restored. The print finished with an ambient temperature of 43C in the enclosure, and humidity of 16%

The finished print looks lovely. Just got to print the sides and the top and we'll be good to go!

 

[ajlelectronics]

However the issue with PETG, is that it absorbs moisture, and it's that moisture that causes print quality issues, as it steams off as it goes through the hotend causing inconsistent extrusion.

Definitely this. A useful test is to run a length of filament through the extruder, just dropping it down from the nozzle. If you run the extrusion between finger and thumb, you will feel the roughness of the moisture boiling off.

 

[Anguz]

I have my petg on a spool inside a plastic electrical box with a sock full of dessicant. Seems to work

 

[Anguz]

Boxes for the sewing machine
Drawn in f360

 

[Screwdriver]

The last time I printed a dinosaur skull for a dino-obsessed five year old, he loved it. For his sixth birthday, his mum suggested I could print a snake or fish skeleton.

So I found this: https://www.cgtrader.com/free-3d-print-models/art/scans-replicas/gaboon-viper-snake-skull

But the stl files are a disaster. So I spent a fair bit of time tidying it up, plus of course, I want the jaws and the fangs to articulate!

Test piece in white before I commit to some bone coloured filament.

Remastered in Sketchup. All one million polygons!

Not quite sure how I am going to articulate it. Watch this space....

 

[My Old Landy]

Some of my own designs today. I am building an enclosure for the laser.
A couple of handles, signs of warning and one of eight corners for the 20 x 20 extrusion.

 

[ukracer]

Some of my own designs today. I am building an enclosure for the laser.
A couple of handles, signs of warning and one of eight corners for the 20 x 20 extrusion.
View attachment 440338

I wonder how many laser users we now have on here.

I just purchased another one but can't get it to cut over 8mm.

 

[My Old Landy]

I wonder how many laser users we now have on here.

I just purchased another one but can't get it to cut over 8mm.

I bought mine 2 years ago but never really used it. It is a 15w diode so doubtful it will cut much.
I expect there are a lot out there as they are so cheap!

 

[ukracer]

I bought mine 2 years ago but never really used it. It is a 15w diode so doubtful it will cut much.
I expect there are a lot out there as they are so cheap!

The one I purchased should cut 20mm but I cant find out whats wrong with it.
130 watt lasers are not that cheap sadly.

 

[skotl]

I need to fit two mains extension blocks and a laptop power supply in the home automation cabinet I'm making.

I've always found the "hang the extension block on two screws" standard approach a little janky, so have come up with this - two straps per block / supply, that take the wonderful reusable cable ties you can get off Amazon.

 

[Screwdriver]

I'd print those at 90 degrees so the layer lines don't go right through the weakest part (lay it on its side).

 

[Misterg]

Not today, but yesterday and the day before ...

Experimenting with PETG (black) and ASA (Red).

I got a part out of the PETG relatively easily. Looks OK, but not very neat

The ASA was more of a challenge which wasn't helped by height of the nozzle varying from print to print. Turns out there was a bug in the firmware so I needed to update that (which wiped out my previous flow calibrations - there's a severely under-extruded part in the pile of red scrap above). I also got a cheap 'tent' to put over the machine as I couldn't even print the flow-rate patches without it. But, with the printing speeds reduced to ~50% of the factory presets, the ASA actually prints OK.

Not sure if my 'pressure advance' needs tuning, or if it's still under extruded.

The bottom surface is still a bit rough, but I've since found the setting to increase the flow for the first layer. I think this one could be usable.

It's a hobby in itself, isn't it?

 

[iNf]

It's a hobby in itself, isn't it?

Yep.

 

[skotl]

Not today, but yesterday and the day before ...

View attachment 440449
View attachment 440446


Experimenting with PETG (black) and ASA (Red).

I got a part out of the PETG relatively easily. Looks OK, but not very neat

View attachment 440450


View attachment 440451

View attachment 440452

The ASA was more of a challenge which wasn't helped by height of the nozzle varying from print to print. Turns out there was a bug in the firmware so I needed to update that (which wiped out my previous flow calibrations - there's a severely under-extruded part in the pile of red scrap above). I also got a cheap 'tent' to put over the machine as I couldn't even print the flow-rate patches without it. But, with the printing speeds reduced to ~50% of the factory presets, the ASA actually prints OK.




View attachment 440453

Not sure if my 'pressure advance' needs tuning, or if it's still under extruded.

View attachment 440454

The bottom surface is still a bit rough, but I've since found the setting to increase the flow for the first layer. I think this one could be usable.

View attachment 440455


It's a hobby in itself, isn't it?

These PETG prints look like mine. I’ve found PLA to produce a far neater output.

 

[Misterg]

These PETG prints look like mine. I’ve found PLA to produce a far neater output.

Ta - I think I'll come back to it, but at the moment am concentrating on the ASA. My initial PLA prints were cosmetically very good, but I want/need something a bit more temperature / weather resistant than PLA.

 

[My Old Landy]

Some more bits for my laser cabinet build.

 

[ukracer]

Some more bits for my laser cabinet build.
View attachment 440543

What plans are you using for cabinet?

 

[My Old Landy]

What plans are you using for cabinet?

No plans, just designing it as I go.

 

[Screwdriver]

Tricky print, even trickier glue up!