This anatomically correct human hand model uses 2.85mm filament to attach and hold the bones together. The filament allows for some movement between bones, however excessive pressure or repeated movements may weaken and break the filament. This model is designed for displaying, studying or light use, but will not stand up to rough classroom handling.
See here for stable download: https://thangs.com/mythangs/file/60043
This is an advanced project to print and assemble. Some anatomy knowledge is helpful but not necessary. Regardless, you will be an expert by the time you are done!
Every attempt has been made to maintain anatomical accuracy with the following exceptions. The pisiform bone has been fused on to the triquetrum and some ends of the distal and middle phalanges have been slightly enlarged to allow insertion of the filament.
Printing Instructions
A file of the complete hand model is included for reference only. Don't print this!
Carpal Bones: Raise these off the print bed around 3mm and add some sort of support. “Tree” supports in Cura works well. IMPORTANT: Print the “Hamate-Capitate-Trapezoid-Lunate Cluster” as is! They are in anatomical position and separating them will make it nearly impossible to assemble the carpal bones. Do not separate or reposition these bones for printing and leave the support structure on until all the carpal bones have been connected.
Metacarpals and Phalanges: The metacarpals and phalanges are positioned from left to right: fifth digit, forth digit, third digit, second digit and thumb. Keep track of these as you print them! It might be helpful to leave the support structure on until right before use. Labelling them might be helpful too.
Stand vs full length bones: The radius and ulna have been split forming distal and proximal sections. The hand bones above attach to the distal portions of the radius and ulna. The stand supports the cut ends of the distal portions of the radius and ulna to hold the hand in an upright display position. Alternately, you can print and attach the proximal portions of the radius and ulna to have the complete bones.
