Infill direction? anyway to make it radial? not concentric

[nerys]

when printing something long especially if it approaches the edge of the build volume. what you want is short cross fill not long fill.

long fill has more tension and peels with great force while short cross fill has tension limited by its short length and "apposes" the peel direction (corner to center)

is there anyway to achieve radial fill at least for the first layer? to see what I mean imagine a cylinder with 4 walls thin comes out of it (think 4 finned rocket/missile) cylinder in the center 4 "fins" coming out from the cylinder to the corners of the build volume.

when I use rec infill 2 of the fins get the short cross direction fill I want while 2 get "long fill" so far the only fix I have found is to change the direction of the fill 45' so its angled to all the fins. no ideal but it does work.

concentric does not work as its the only fill pattern that is not global. its "each block" dependent so all 4 fins when up with "long fill"

Any suggestions? also is there anyway to "exclude" fill from some parts of the model? for example in this image I don't need fill in the cylinder just the fins. not a big deal here but in other models it can add a lot of time filling areas I don't need filled.

[nerys]

I may have solved my own issue. I did not realize until I just tried it that I can have 2 different infill directions in 2 processes.

since layer 1 is its own process I just made that process 45' and for process 2 (1 more infill layer) I made that one -45'

that actually works perfectly! now BOTH layers are "short length" infill for all 4 fins. should be much more stable.