Is there any chance this will print?
I've done a few test prints of this fin for a SUP, but the connectors break easily. Is there any chance for this print to work?
I've printed it upright to print without supports. The PETG is a tad old, so maybe it doesn't have the best quality anymore. The bottom lip of those connectors is just 2.3mm.
Anyone know whether it's worth pursuing this endeavor any further?
Prusa Mini FW4.4.1
RE: Is there any chance this will print?
look at the layers. The model will always brake between two layers because this is the weakest point. If you print it upright, the weakest point will be the point where you give it max force: the neck of the connectors. Print it flat and these points will be tougher. You can print it without supports when you cut it in two halves and glue it together afterwards. Prusaslicer has the feature to do so. Make sure that the halfes do not warp or release from the build plate. Perhaps you want to print Mouse ears or a windshield around (Prusaslicer also has this feature in the rafts/brim section) to be on the safe side.
Printing PLA and PETG at the same time? See the Guide for MultiMaterialSupports ----- Ejecting Buffer cassettes is not satisfying? May the Fork be with you!
It's an old problem: This looks like an attempt to copy a part initially designed for injection moulding. 3D printed parts are stronger than injection mouldings *along the lay* but weaker across the layers. If possible, if the mounting point permits it, reinforce the mounts and the 'T' junction, consider splitting it into two parts and joining post printing and even consider redesigning the mount point to spread the stresses.
Cheerio,