Search found 52 matches

by laird
Wed Aug 26, 2015 10:14 pm
Forum: Beta Testing
Topic: Osprey Hand: FEEDBACK/TESTING REQUESTED
Replies: 31
Views: 6180

Re: Osprey Hand: FEEDBACK/TESTING REQUESTED

I printed one at 150%, and 1.8mm filament worked well. I printed the hand using Taulman 910 Nylon, which is fairly rigid, and used Bridge for the tendons since it's more flexible. I did have to run a thin drill bit through the channels in the gauntlet to clear them out a bit. I attached the filament...
by laird
Mon Jul 20, 2015 12:12 pm
Forum: Beta Testing
Topic: Osprey Hand: FEEDBACK/TESTING REQUESTED
Replies: 31
Views: 6180

Re: Osprey Hand: FEEDBACK/TESTING REQUESTED

FYI I tried using fishing lure wire, and it is not quite strong enough to push the finger open. I will pick up some 1.2 mm nylon mono and try that.
by laird
Sun Jul 19, 2015 2:14 pm
Forum: Hand-o-matic
Topic: Parametric STL Generator in Fusion
Replies: 6
Views: 2526

Re: Parametric STL Generator in Fusion

This is exciting. If we pre-generate all of the possible outputs then all Hand-o-matic has to do is pick the right files, which will be extremely fast! The challenge will be that if the number of options is large, it'll take a while to generate. But since it's a script, that's just a matter of plann...
by laird
Sun Jul 19, 2015 2:08 pm
Forum: Beta Testing
Topic: Osprey Hand: FEEDBACK/TESTING REQUESTED
Replies: 31
Views: 6180

Re: Osprey Hand: FEEDBACK/TESTING REQUESTED

Print scale: 100% Beta tester: Laird Popkin Printer/material: Ultimaker Original+, PLA Tolerance Set: A Mechanical function: test print Assembled to: printed components and assembled, no hardware Notes: - Channels (at 100%) in the proximals and distals are slightly too small to use 1.75mm filament (...
by laird
Sat Jul 18, 2015 2:33 pm
Forum: Hand-o-matic
Topic: Merging Les' code
Replies: 0
Views: 638

Merging Les' code

Working in the les_hall branch: - Added logic so that Refactored() is only called for the Raptor Reloaded design, and the old Assembled() is called for all other hands (which didn't appear to be supported in the refactored code). This means that the app works, and we can move different hands over in...
by laird
Mon Apr 20, 2015 1:29 am
Forum: Hand-o-matic
Topic: Suggestion: Parametric screw holes
Replies: 4
Views: 1331

Re: Suggestion: Parametric screw holes

When the pins are printed, you don't need to make the holes parametric, because you can scale the pins along with the parts with the holes. For the Raptor designs, the only screws are in the tensioner. The wood screws have wide threads, so the size doesn't have to be exactly right, because the screw...
by laird
Mon Apr 20, 2015 1:22 am
Forum: Hand-o-matic
Topic: Hand scaling
Replies: 4
Views: 1443

Re: Hand scaling

We could certainly use other measurements - wrist width, arm width, affected knuckle width, etc. The current scaling rule, from the designers of the hands, does tend to generate large hands, which will always fit around the affected hand, but will be too large for some people. Any suggestions for wh...
by laird
Sun Apr 19, 2015 10:27 pm
Forum: Beta Testing
Topic: Thermoformed Raptor Reloaded Gauntlet: FEEDBACK/TESTING REQUESTED
Replies: 39
Views: 12200

Re: Thermoformed Raptor Reloaded Gauntlet: FEEDBACK/TESTING REQUESTED

I am printing this for someone to try. I just noticed that the v5 version has a round front to the tensioner slot. Does that mean that I should print the older version with the square front slot? Or is the regular tensioner meant to fit into the slot, wedged into the rounded front? I ended up using ...
by laird
Wed Mar 18, 2015 11:49 am
Forum: Technical Q&A
Topic: Skeinforge Settings Help
Replies: 12
Views: 2629

Re: Skeinforge Settings Help

You can also get fairly cheap fans that are USB powered. http://www.coolerguys.com/usbfans.html for example. Then you can power it from a USB power supply, or a nearby computer. And it's easy to plug/unplug the fan from USB so that you cool the PLA prints and not the ABS prints.
by laird
Wed Mar 18, 2015 11:45 am
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2623

Re: Hand-o-matic activity

Hi, Les!
by laird
Wed Mar 18, 2015 11:45 am
Forum: Hand-o-matic
Topic: Suggestion: Parametric screw holes
Replies: 4
Views: 1331

Re: Suggestion: Parametric screw holes

That's a great idea. It would be easy to make the tensioner screw holes parametric! I've got a parametric tensioner pin model already. So we'd just need to figure out whether we want to make the screws one constant size, or perhaps let users pick between a few sizes? Note that with wood screws the s...
by laird
Wed Mar 18, 2015 11:39 am
Forum: Hand-o-matic
Topic: Hand scaling
Replies: 4
Views: 1443

Hand scaling

The scaling logic is an area that we've evolved, and will continue to evolve, based on feedback. The current rule is: 1) The Hand-o-matic scaling rule right now is that the interior of the printed palm is scaled to be the knuckle width of the full hand + the padding. This means that the printed hand...
by laird
Sun Mar 15, 2015 2:10 pm
Forum: General R&D
Topic: Superhero Cyborgs: kids designing their own device?
Replies: 2
Views: 857

Re: Superhero Cyborgs: kids designing their own device?

One thought - when you come up with different designs, we could add them to Hand-o-matic so that kids could pick different designs. That'd be easy to add!
by laird
Sun Mar 15, 2015 2:08 pm
Forum: General R&D
Topic: Swiss Army Hands
Replies: 6
Views: 1959

Re: Swiss Army Hands

In a parametric model (e.g. Hand-O-Magic) we could make the rails a fixed size while scaling everything else. What would the desired dimensions be? I am sure that one of the OpenSCAD programmers here (me, Les, Nathaniel, etc.) could make this happen.
by laird
Sun Mar 15, 2015 2:05 pm
Forum: Technical Q&A
Topic: Skeinforge Settings Help
Replies: 12
Views: 2629

Re: Skeinforge Settings Help

I really like making the first layer thick and slow. For example, 150% thickness, and 50% speed, and I calibrate the nozzle pretty close to the print bed, so the first layer really sticks. This sometimes means that I have a little extra material on the first layer, but that's easy to trim off. And,...
by laird
Sun Mar 15, 2015 2:01 pm
Forum: General Getting Started
Topic: I want to buy a 3D printer
Replies: 17
Views: 5703

Re: I want to buy a 3D printer

There are many great prints out there, but I can only talk about the ones I have used personally: I own a Replicator and a FlashForge Pro, and both have been great. MakerBot stopped making the Replicator (the original model) long ago, and the FlashForge is a modern "clone" with some nice e...
by laird
Fri Mar 13, 2015 2:00 pm
Forum: Technical Q&A
Topic: Cura & Flashforge Creator Pro
Replies: 4
Views: 8791

Re: Cura & Flashforge Creator Pro

I recently downloaded Cura slicing software and really like how fast it is. I selected the Makerbot profile, which seems to be the closest match. However, one problem that I have is the extruder head crashes into the right rear side of the cabinet when starting a print. I'm assuming the home positi...
by laird
Fri Mar 13, 2015 1:57 pm
Forum: Myoelectric
Topic: Myo-tensioner adaptor for Raptor and Talon hand
Replies: 11
Views: 3840

Re: Myo-tensioner adaptor for Raptor and Talon hand

This is awesome. I'd suggest posting go the G+ Community https://plus.google.com/u/0/communities ... 6887179986 to share progress so far and to recruit people to collaborate on this project, linking to this forum for collaboration.
by laird
Fri Mar 13, 2015 1:17 pm
Forum: Terminal Devices/Tools
Topic: Swiss Army Device
Replies: 5
Views: 2035

Re: Swiss Army Device

http://armdynamics.com/pages/activity-specific has all sorts of interesting-looking function-specific attachments to prosthetics. In particular, they have a cool locking wrist mechanism that can be adjusted to a near-infinite number of positions and locked into place. Who knows of more examples tha...
by laird
Fri Mar 13, 2015 1:09 pm
Forum: Technical Q&A
Topic: Suitable 3D Printer
Replies: 6
Views: 1915

Re: Suitable 3D Printer

Thanks for the replies. :) Would the Flashforge Creator Pro's build dimensions be enough to print adult-sized hands (Cyborg Beast, Raptor etc.)? Most information I've seen shows child-sized hands. Not many adult prints. Thanks! The FlashForge (or any of the Replicator clones) have plenty of room fo...
by laird
Fri Mar 13, 2015 1:06 pm
Forum: Hands
Topic: An OpenSCAD version of the cyborg beast palm with fingers you can add and remove
Replies: 11
Views: 1665

Re: An OpenSCAD version of the cyborg beast palm with fingers you can add and remove

That hull trick is clever. I've usually seen it done by drawing a cylinder between the points, which requires using trig to compute angles. With hull, you just use the two points! Easy!
by laird
Fri Mar 13, 2015 1:05 pm
Forum: Technical Q&A
Topic: Skeinforge Settings Help
Replies: 12
Views: 2629

Re: Skeinforge Settings Help

The fingertips on these designs are a challenge to print, because they require a steep overhang, both in the front (the long overhang of the fingertip) and in the back (the curved radius at the bottom of the end of the finger). I really like making the first layer thick and slow. For example, 150% t...
by laird
Fri Mar 06, 2015 4:17 am
Forum: Technical Q&A
Topic: Suitable 3D Printer
Replies: 6
Views: 1915

Re: Suitable 3D Printer

The FlashForge doesn't do flexible filament too well. It's great for PLA and ABS and Nylon, though.
by laird
Tue Mar 03, 2015 6:55 pm
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2623

Re: Hand-o-matic activity

Excellent.

Apologies for disappearing, guys, but I'm about to start a new job so I'm pushing to wrap up a bunch of work and hand it off.
by laird
Tue Mar 03, 2015 6:53 pm
Forum: Hands
Topic: Printed pulleys for reducing friction on the flexsors
Replies: 3
Views: 1227

Re: Printed pulleys for reducing friction on the flexsors

I think this is a brilliant idea! I'm wondering if we could make this all out of 3d printing materials, by printing a bearing ring, concave on the outside, sliding around a piece of filament (which is strong and smooth)? It wouldn't be quite as low friction as a real bearing, but it'd be cheap and a...
by laird
Tue Mar 03, 2015 6:34 pm
Forum: Hands
Topic: Wiring angle ?
Replies: 3
Views: 853

Re: Wiring angle ?

That's what I've been doing. I can't claim that it's terribly precise, though. I prop the hand up on a screwdriver handle when I tied off the lines.
by laird
Tue Mar 03, 2015 6:33 pm
Forum: Hands
Topic: Deformed/damaged hand models
Replies: 4
Views: 1581

Re: Deformed/damaged hand models

That would be very useful. Do we have any scans of hands that we have permission to share with the group?
by laird
Tue Mar 03, 2015 6:32 pm
Forum: Hands
Topic: pulleys in hands vs range of motion
Replies: 2
Views: 668

Re: pulleys in hands vs range of motion

Very interesting idea. I could imagine pullies attached to the tensioner pins, so the lines double back to the palm and tie off. That would double the finger movement for the same range of motion. It's an interesting tradeoff between range of motion and force of motion.
by laird
Fri Feb 27, 2015 4:20 am
Forum: Hands
Topic: An OpenSCAD version of the cyborg beast palm with fingers you can add and remove
Replies: 11
Views: 1665

Re: An OpenSCAD version of the cyborg beast palm with fingers you can add and remove

This is really good. I"ve been crushed with work, but I'll try printing these to see how they look, perhaps Sunday.

Unless someone else gets to it first, of course, I wouldn't want to delay things! :-)
by laird
Fri Feb 27, 2015 4:18 am
Forum: Hand-o-matic
Topic: Log Processing
Replies: 8
Views: 1777

Re: Log Processing

The spreadsheet looks awesome. The values for the selectors are from that JSON above. Here it is stripped down to what's relevant: FingerSelect "finger": [ { "id": 1, "name": "Cyborg Beast, Bumps" }, { "id": 6, "name": "Cyborg Beast, N...
by laird
Fri Feb 20, 2015 10:15 pm
Forum: General
Topic: Introduce yourself!
Replies: 20
Views: 3736

Re: Introduce yourself!

Hi, I am Laird Popkin. I am in software engineering, a Maker, like designing and 3D printing things, and coordinate the Hand-o-matic system.
by laird
Thu Feb 19, 2015 11:42 pm
Forum: General
Topic: Looking forward to getting my printer running
Replies: 1
Views: 745

Re: Looking forward to getting my printer running

Good luck!
by laird
Thu Feb 19, 2015 11:40 pm
Forum: Hand-o-matic
Topic: Log Processing
Replies: 8
Views: 1777

Re: Log Processing

Can we get the equivalent log file from the mirror sites?
by laird
Thu Feb 19, 2015 5:08 pm
Forum: Technical Q&A
Topic: DeltaMaker 3D printer
Replies: 5
Views: 1814

Re: DeltaMaker 3D printer

Awesome! The DeltaMaker is a fantastic printer. It's physically very durable, and self-calibrating, so it's very easy to take to Maker Faires and such. And having OctoPrint built in is very powerful.
by laird
Thu Feb 19, 2015 5:06 pm
Forum: Technical Q&A
Topic: Help with a new printer! Pic heavy with settings
Replies: 8
Views: 2750

Re: Help with a new printer! Pic heavy with settings

The FlashForge doesn't have active cooling, but it supports adding it. The motherboard is ready to plug a fan in, so no soldering, etc. And I'd recommend it highly. I am using http://www.thingiverse.com/thing:537918 on my FlashForge Pro, and it's made a world of difference. Print it in ABS, so that ...
by laird
Thu Feb 19, 2015 4:56 pm
Forum: General Administrative
Topic: Forum Suggestion Box
Replies: 7
Views: 1602

Re: Forum Suggestion Box

the by ....... is blank unless I scroll over and then i get who it was posted by


I don't have that happen for me. What browser and OS are you using?
by laird
Thu Feb 19, 2015 4:55 pm
Forum: General Administrative
Topic: Some relevant extensions
Replies: 1
Views: 1141

Some relevant extensions

After using the forums a few days, there are some PHPBB extensions that we might want to consider at some point. I'm posting them here for future reference. ⋅  Board Rules : https://www.phpbb.com/customise/db/extension/boardrules/ . Manage a list of forum rules. Can require all members to ...
by laird
Thu Feb 19, 2015 4:38 pm
Forum: General R&D
Topic: Development of standardisation for parts
Replies: 3
Views: 867

Re: Development of standardisation for parts

We've discussed this a bit. Andreas has thought about this, I know. My thought is that we need to standardize the physical interfaces, such as: - Wrist: Palm to gauntlet. - Tensioner to gauntlet (e.g. the slot in Raptor and Raptor Reloaded). We're already seeing several swappable tensioner mechanism...
by laird
Thu Feb 19, 2015 4:33 pm
Forum: Hands
Topic: Bracer; Gauntlet; Sleeve; Cuff; Bracelet
Replies: 11
Views: 2711

Re: Bracer; Gauntlet; Sleeve; Cuff; Bracelet

Reading http://en.wikipedia.org/wiki/Components_of_medieval_armour was highly entertaining, full of wonderful obscure terms. For example: ⋅  Rerebrace or Brassart or Upper Cannon (of Vambrace) : Plate that covers the section of upper arm from elbow to area covered by shoulder armour. &sdot...
by laird
Thu Feb 19, 2015 4:12 pm
Forum: Hand-o-matic
Topic: Log Processing
Replies: 8
Views: 1777

Log Processing

DrUsual is working on processing the Hand-o-matic logs into a format that can be analyzed to look at popularity of different sizes, etc., while protecting privacy. We've been discussing this in email, but let's move the discussion to the forum so that everyone can see what's going on, contribute, as...
by laird
Tue Feb 17, 2015 5:05 pm
Forum: Hands
Topic: Bracer; Gauntlet; Sleeve; Cuff; Bracelet
Replies: 11
Views: 2711

Re: Bracer; Gauntlet; Sleeve; Cuff; Bracelet

Since the "gauntlet" is only the outer half of the arm, and it's the length of the arm, perhaps "bracer" is better than "sleeve" (which goes all the way around) or cuff (which is just the end of the sleeve)?

Or am I being too literal? :-)
by laird
Tue Feb 17, 2015 5:03 pm
Forum: Hands
Topic: Fill when printing
Replies: 12
Views: 2104

Re: Fill when printing

I've been using 2-3 shells (outer layer) and 25-50% infill, depending on the part. Fingers and palm don't need much infill, since the parts designs are strong shapes, while the gauntlet need more because the large arch isn't as strong a shape. IMO, of course.
by laird
Tue Feb 17, 2015 4:27 pm
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 4968

Re: Spidey Sense! A Practical Implementation

Nice. So what can we use as the fingertip switches?
by laird
Tue Feb 17, 2015 2:20 pm
Forum: General Administrative
Topic: Processes and Procedures
Replies: 3
Views: 1026

Re: Processes and Procedures

I agree that a "Design Ratification" forum would be good. We could define the process, and people could post designs there when they're submitting for ratification. It's more general than Arms - we need to have a process that can apply to hands and arms. Shall we start a forum in R&D G...
by laird
Tue Feb 17, 2015 2:18 pm
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 4968

Re: Spidey Sense! A Practical Implementation

There's a variation on this that might be useful - as a visual indicator of touch. Imagine having five LEDs on the back of the palm that light when the fingertips touch something. I think that'd be pretty useful. Not too sure how low power these things are, and thus how long a battery would last, th...
by laird
Tue Feb 17, 2015 2:15 pm
Forum: Hands
Topic: Help needed with resizing a hand
Replies: 3
Views: 987

Re: Help needed with resizing a hand

We implemented this in Hand-o-matic a while ago, and it worked great for moderate scaling, but got "odd" for extremes. We're going to be re-enabling it, but until then, from my notes: - For all parts, scale by the "length" percentage in the direction of the length of the arm and ...
by laird
Tue Feb 17, 2015 1:50 am
Forum: General Administrative
Topic: Forum Suggestion Box
Replies: 7
Views: 1602

Re: Forum Suggestion Box

Is there any objection to increasing the avatar size? Any idea what a good size would be?

Build logs are GREAT idea.
by laird
Fri Feb 13, 2015 5:17 am
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2623

Hand-o-matic activity

Jon asked how we're doing as a project, because his sense is that we've created a rich and unique application that does a lot for an open source project. To answer that, we can look at the GitHub activity graphs for our repositories. We have two main repositories for Hand-o-matic: - https://github.c...
by laird
Thu Feb 12, 2015 8:19 pm
Forum: General
Topic: Welcome to phpBB3
Replies: 2
Views: 1160

Re: Welcome to phpBB3

Very pretty blue ! :lol:
by laird
Thu Feb 12, 2015 5:25 pm
Forum: General Administrative
Topic: Requests from previous instance
Replies: 0
Views: 555

Requests from previous instance

    Google Analytics
    Make it look at least good enough and e-NABLEy enough to invite some people to begin using it.
    Board rules
    Social Login
    Wysiwyg post editor?
    Provide a welcome Guide
by laird
Thu Feb 12, 2015 5:21 pm
Forum: General Administrative
Topic: Every Category has to have a forum...
Replies: 0
Views: 531

Every Category has to have a forum...

Every category has to contain a forum for people to post in. I created a 'general' forum in each category for general discussion of R&D, Administrative, etc. As we have more discussion we can add more forums as appropriate, and the structure will feel more natural.
by laird
Thu Feb 12, 2015 5:12 pm
Forum: Hand-o-matic
Topic: Hand-o-matic Issues List
Replies: 1
Views: 1003

Hand-o-matic Issues List

The Hand-o-matic issues list is at https://github.com/e-nable/Assembler/issues . It is used to keep track of which issues are open or closed, priority, and assignment. Some filtered views: Bugs https://github.com/e-nable/Assembler/issues?q=is%3Aopen+is%3Aissue+label%3Abug High Priority https://githu...

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