Submission for K1 Hand Assembly Certification

By Joe Farrell

Thank you for reviewing my work.

Below please find the video, photos and narrative used to supply your request for evidence.


Click on pictures for enlargements

	The K1 Hand by Evan Keuster Downloaded from Thingiverse 3D printed by Joe Farrell Using a Creality CR-10 S5 In Blue PLA 100% Scale Click here for fabrication certification page Materials: 2 mm Elastic Stretch Shock Cord 1.2 mm monofilament 3 mm Tube Crimp End Beads Finger tip grips Velcro strips and rivets
Adjustable Straps

	The palm uses 1/2 inch Velcro straps and the gauntlet uses 3/4 inch. The straps are riveted in place with the soft side of the Velcro and the smooth side of the rivet against the skin. The rivet is hidden when the strap is folded into place
Challenges Encountered and How They Were Addressed Challenges Encountered Below is an email excerpt from Jenny For the photo below with the yellow, it's a bit snug on that part. If I'm going to slide my hand in with my palm upward, I can't lay it flat I had to twist it a bit to comfortably fit because if I lay it flat, the bone in wrist hits the side with screw - it hurts a bit but nothing extreme. If you look at the yellow facing the right direction that part is slightly sticking out than the left part (near the thumb) Would you advise to heat it up with a blow dryer and flatten it? I'm just thinking if I flatten the screw might not fold the hand anymore. Or I can try to put a padding inside.


How the Challenges Encountered Were Addressed
After some discussion, I made 2 more sets of Gauntlets and palms. I used a gauntlet forming jig from an other model to stretch the gauntlet at the wrist and used a hairdryer for about 10 minutes on the wrist area.
In the picture on the right, the gauntlet on the bottom is printed at 100% and the palm and gauntlet on the top is the set from above showing the stretched wrist area.
This set was stretched a little larger
I mailed the test sets off to Jenny and she wrote me back to say that the new gauntlets and palms were too loose and that she prefers the one she has.


Evidence Required: Links to a video and/or photos of the assembled device. While not strictly required, a video is strongly preferred. Post a video on http://youtube.com of the device and provide the video link in the badge request form. The video can be unlisted if you do not want it to show up in public YouTube searches. Make sure the video includes the following: (1) Introduce yourself. (2) Manipulate the device and show its functionality. (3) Show the print quality. (4) Show that it is adjustable when applicable. (5) Show print features closely and highlight any problems in the test print. (6) Stress test manually attempting to bend fingers and other solid parts. (7) Where did the design come from? (8) What type of printer did you use? (9) Explain what challenges you encountered and how they were addressed.
Thank You to: Jenny for advice, Pat for the camera loan and advice, Marta and Mel for strap advice and telling me that the "stretchy stuff" should be 2mm Elastic Stretch Shock Cord and where to find it.