Search found 10 matches

by mmcginnis9272
Mon Jun 29, 2015 10:49 am
Forum: General R&D
Topic: DaVaHaG - Dynamically Variable Hand Grip tension box
Replies: 7
Views: 3018

Re: DaVaHaG - Dynamically Variable Hand Grip tension box

Here is version 2 This version is half the height of version 1 with the same effective action. 2 of the original cams has been placed side by side and 180 out of phase to each other. The finger strings run under the first cam and over the second cam. The knob is connected to the 2 cams via gears to ...
by mmcginnis9272
Tue Jun 23, 2015 11:53 pm
Forum: General R&D
Topic: DaVaHaG - Dynamically Variable Hand Grip tension box
Replies: 7
Views: 3018

Re: DaVaHaG - Dynamically Variable hand Grip tension box

Both of the before mentioned ideas sound intersting in their own way. I have discovered that the individual strings move just over one inch from open to closed poition. So, to prevent a finger from being activated it's string must either be disengaged all together, or its string effectivly legthened...
by mmcginnis9272
Tue Jun 23, 2015 11:32 am
Forum: General R&D
Topic: DaVaHaG - Dynamically Variable Hand Grip tension box
Replies: 7
Views: 3018

DaVaHaG - Dynamically Variable Hand Grip tension box

I thought it would be good to take the advice of some and start a thread about developing a dynamically variable tension box to replace the current one for the Raptor type hands. As you can see in the proof of concept video below, a dial on the back of the gauntlet can be rotated to allow for 4 diff...
by mmcginnis9272
Tue Jun 16, 2015 12:18 pm
Forum: Beta Testing
Topic: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing
Replies: 165
Views: 43524

Re: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing

Sorry it has taken me several days to respond. I was the one that had the issue adjusting the wippletree with the adjustment screws because I claimed that the swivel pin was as long as the box and therefor could not be adjusted. Well, once again I proved that a bag of hammers sometimes has more brai...
by mmcginnis9272
Sat Jun 13, 2015 3:02 am
Forum: Beta Testing
Topic: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing
Replies: 165
Views: 43524

Re: The New Hand (previously Eagle Hand) fabrication and mechanical function testing

Good job! That hand looks great. It's cool to know you printed fine without extra supports. The swivel pin shouldn't be the entire length of the box. It's about 3/4 the length. That makes perfect sense now. When I printed the swivel pin it was the same length as the box. I'll cut a bit off the end ...
by mmcginnis9272
Fri Jun 12, 2015 11:17 pm
Forum: Beta Testing
Topic: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing
Replies: 165
Views: 43524

Re: The New Hand (previously Eagle Hand) fabrication and mechanical function testing

120% hand is done. Printed with no extra supports. No issues at all printing. All parts fit together perfectly. While I got the fingers/whippletree adjusted, for the life of me, I cannot figure out how your are supposed to adjust the overall tension on the fingers with the 2 screws. There is no room...
by mmcginnis9272
Fri Jun 12, 2015 10:58 pm
Forum: Beta Testing
Topic: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing
Replies: 165
Views: 43524

Re: The New Hand (previously Eagle Hand) fabrication and mechanical function testing

StephanDavies: Is there any way that you can post the thermomesh as a plate that can be screwed in place? This allows me to more easily line the pocket with MoleSkin padding. Also, if the thermomesh gets screwed up while forming, I can just replace it with a new one. Not to mention the fact that I a...
by mmcginnis9272
Fri Jun 12, 2015 11:13 am
Forum: Beta Testing
Topic: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing
Replies: 165
Views: 43524

Re: The New Hand (previously Eagle Hand) fabrication and mechanical function testing

The link to your thermomesh file is 404 dead.

Can you fix that?

Thanks.
by mmcginnis9272
Fri Jun 12, 2015 10:02 am
Forum: Beta Testing
Topic: The Phoenix Hand (previously Eagle Hand) fabrication and mechanical function testing
Replies: 165
Views: 43524

Re: The New Hand (previously Eagle Hand) fabrication and mechanical function testing

I finished the print at 120%. Couple things I noticed. I don't see the file for the wrist pins. Also the files for the fingertip_short_x2 and guntlet_supports_x1 are non-manifold. everything printed just fine. All snap-fit parts worked fine. Now on to stringing everything up.

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