These are replacement parts for the discontinued plastic clamps which have a tendency to crack on some older Manfrotto tripods. These are just the small, medium, and large clamp housings and the small spacer block under the lever arm. You still need the original lever arm for this to work. Please comment if you don't have that and need an aftermarket replacement for that too, so I may consider making a model if there is need. These parts may have been used in the following old models: 719B (I have this) 728B, 728NAT3, 276, 328-7-5, 328-2-5, 725B, 724B, 676B, 559B, 290NAT3, 290BWB, 276B Specifically these are compatible with r328.01, r328.03, r328.05 spare parts.
For assembly you need a M3 nut and a 25mm M3 hex screw or something applicable. In a pinch, you can also just epoxy glue or duct tape these parts together, since the screws aren't really under much load in normal use.
You want to print these with min 40% infill, with 4 or more vertical, bottom and top shells to bear the load. Use supports and orient the parts so that the m3 nut and screw counterbore holes face UP, since removing supports from inside them is a real pain.
Also included is the small spacer block under the lever, print that vertically for maximum part strength, the layerlines don't affect part operation.
These models are licensed under Creative Commons Attribution-NonCommercial 3.0 license.
That's all, happy photographing!
leg clamps, manfrotto, 719b, tripod, spare part. parts