GregValiant 1,455
"Rules??? We don't need no stinkin' rules!!!" - Various (but may have started in "Treasure of the Sierra Madre")
"They're not actually rules as such. More like guidelines" - Capt. Barbossa - "Pirates of the Caribbean"
Pretty much every model has it's own needs. Saying "this is always how you do it" isn't going to work very often because there will always be an "Except when _____ _____ ______."
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GregValiant 1,455
I think "Grid" is the best all purpose infill. With the "Infill Line Multiplier" at 3 you will get a noticeable increase in stiffness. I would think an Infill Density of 10% at 3 lines thick would be sufficient. Changing the Infill Line Directions to [0,90] might help as well. The "best" line directions would depend on the directions of the load that you expect the part to see.
If you require the stiffness because the part will see some sort of twisting load then Wall Thickness and Layer Height will become more important.
"Is there a rule of thumb as to best determine all the parameters for a given amount of filament I want to use for printing the plate?"
"The amount of filament I want to use" is something I've never considered. The volume of filament is-what-it-is depending on the geometry of the part and the infill structure it requires to perform the function it was designed to.
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shoe 1
Well. Amount of filament. Print time. Whatever metric you want to use. I don't want to waste time and money (PLA, electricity). Common wisdom is to increase the outer shell (top, bottom, walls). It seems infill plays almost no role in "strength" and "stiffness". Maybe I am mistaken.
But maybe beyond a certain wall count (e.g. 6), this rule doesn't hold true and it makes more sense then to increase infill to get better strength/stiffness.
Those kind of rules I was hoping for. For example, for every two walls increase infill by 10%. Rules like that.
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