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What's the best way to print this?  

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Poodadoo
(@poodadoo)
Member
What's the best way to print this?

This one has me stumped for the best way to configure this to print.  I'm using PrusaSlicer 2.7.0 and I am reasonably new to 3D printing but I'll be damned if I can figure out how to lay this on the bed and proper support settings, etc.

Would love some feedback.

Permatrack Roof Pitch 135.stl

Best Answer by Neophyl:

I'd print it like the bottom one but with less support. Those towers on the right aren't needed at all.  Just define the enforcer for the areas that do need it and everything else will print fine. 

With good bed adhesion I wouldn't even use a brim but as I don't know what printer you are using I added one for the example.

Example project attached  

Posted : 07/12/2023 8:09 pm
fuchsr
(@fuchsr)
Famed Member
RE: What's the best way to print this?

Can't access it. Access rights. Please don't use a third party site, zip compress the file and use the attach file button to upload it here. 

Posted : 07/12/2023 10:17 pm
Poodadoo
(@poodadoo)
Member
Topic starter answered:
RE: What's the best way to print this?

I don't see an "attach file" button.  I see an Add Media button but it will not allow attaching of .stl files.

If you'd like to show me the button you are referring to, I'll happily attach the file... But, in the meantime, I've adjusted the permissions on the file on my google drive.

Posted : 08/12/2023 1:16 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: What's the best way to print this?

'Attach file' is below the text input window, on the left hand side. 

STL's need to be ZIP COMPRESSED. before the  forum will allow them to be attached. 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 08/12/2023 2:08 am
Poodadoo
(@poodadoo)
Member
Topic starter answered:
RE: What's the best way to print this?

It's a bit misleading because it says media but I zipped it... Let's see if it works.

Permatrack Roof Pitch 135

Posted : 08/12/2023 2:12 am
_KaszpiR_
(@_kaszpir_)
Reputable Member
RE:

This is quite interesting - it really depends on what is your priority?
- time
- used filament
- structural strength
- quality of specific walls?

Choose wisely! Below some screens with arbitrary filament selection, but notice bottom right corner about used filament and time spent.


Above is Inverted bridge, probably more filament wasted to supports than model itself 😀
Also, that print time is insane!


Above is side print, quite a lot of supports as well.


Above is 'bridge', could be tweaked to use less supports by painting only on specific places and ensuring printer can make decent bridges.


Half of the print is over supports, though.


Least supports, but those support towers on the right can turn into a nightmare and fail. Yet maybe your printer may not really need them?

Personally I would go with the 'bridge' because base is full of supports and less prone to things going bad, after that it prints other fragments.

Uses a bit more filament for supports but prints the quickest.

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 08/12/2023 10:24 pm
jsw
 jsw
(@jsw)
Famed Member
RE: What's the best way to print this?

If this were mine, I would do it pretty much the way the first example is shown, assuming the inside of the model is not intended to be visible.  'Greasy side down.' As in position break-away supports so the blemished surfaces will not show.

Posted : 08/12/2023 10:38 pm
Neophyl
(@neophyl)
Illustrious Member
RE: What's the best way to print this?

I'd print it like the bottom one but with less support. Those towers on the right aren't needed at all.  Just define the enforcer for the areas that do need it and everything else will print fine. 

With good bed adhesion I wouldn't even use a brim but as I don't know what printer you are using I added one for the example.

Example project attached  

Posted : 09/12/2023 2:09 am
Poodadoo
(@poodadoo)
Member
Topic starter answered:
RE: What's the best way to print this?

@Neophyl wins!  This printed flawlessly and thanks for including the sample file.  Question though... (from a learning point of view) -- what is an enforcer and how did you get the supports to print this way?  Every time I tried it wanted to print supports for the top part.  This setup printed flawlessly on my Ender 5 S1

Posted : 09/12/2023 12:57 pm
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