This is the clock script for the current version of the test jig, which has been improved based on feedback from rustedrobot who printed out several iterations of the printable clock project, and several other makers on thingiverse with particular expertise on gears.Current development version to be found on git hub here: github.com/syvwlch/Printable-Clock-ProjectIt requires my clock builder script, which in turn requires the MCAD/involute_gear library and my clockwork library.Particular improvements include:(UPDATE: if run using the latest clock-builder script, the escapement wheel will use club teeth, which should print better than the original ratchet wheel (thanks ssd, for the feedback on the original one). I have uploaded the two modified parts, the escapement wheel and the escapement, as parts 02b and 03b respectively. The rest are unchanged and do not need to be reprinted.)(UPDATE: the club-tooth version described above has been tested by TheRuttmeister and it passed all four tests! Major milestone. :-D We're going to work on mounting the string on the drum, rewinding it, and on a actual functional pendulum.)(UPDATE: rustedrobot has also printed out the club-tooth version and with some post-print fine-tuning, got it to run for two minutes powered by a weight on a string! Video here: http://www.prototribe.net/vidplay/testjig2.html )(UPDATE: improved back frame available, part 5b, which now includes countersunk hexagonal holes to hold the bolt heads and sit flush with the wall, as well as two wall mounting holes, same diameter as the bolts.)(UPDATE: added a version of the drum with holes for attaching string, part 1b)(UPDATE: part 03c is a variant of the escapement with increased drop, i.e. smaller impulse faces. The intent is to remove the need to shave the teeth before it works.)Print one of each STL file, or fiddle with the parameters, check your work with the assembled view, and then generate a new STL for each part, and print those.(UPDATE: Parts 02 and 03 have already been tested and the ratchet teeth print out too short. Please print out and test parts 02b and 03b instead!)(UPDATE: with some manual post-processing, parts 02b and 03b do tick. There is also a part 05b available with improved frame features. Recommend you use all b variants available.)(UPDATE: to avoid drilling a hole in the drum to attach the string, print part 01b instead!)This test jig requires two shafts to slip the sleeved gears over, and another two to hold the frame together, outer diameter 3mm with a clearance of half a millimeter either side, so M3 will work... without drilling!Test #1: with the escapement (03) in place, are there any escapement positions for which the escapement wheel (02) can rotate freely?If yes, test failed.Test #2: without the escapement in place, can the escapement wheel be made to turn by applying moderate torque to the drum (01)? How much flex is there in the frame during this test?If no, test failed.Test #3: with the escapement in place, and with moderate clockwise torque applied to the drum, does swinging the escapement slowly back and forth cause the escapement wheel to 'tick' forward by one tooth for every swing?If no, test failed.Test #4: repeat test #3, but instead of swinging the escapement back and forth, slowly push the escapement until the escapement wheel 'ticks'. When it does, does the escapement jump ahead a little, indicating that the wheel gave it an 'impulse'?If no, test failed.