Jonathan Hartman
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  • Pittsburgh, PA
  • United States
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Jonathan Hartman's Discussions

US Sources for 1018 Flat Bars?

Started this discussion. Last reply by Ethan Bartholomae Dec 2. 6 Replies

Hi, everyone!For my last B&S armature, I used brass, which worked fine, but I'd like to try working with steel on the next one.I'd really like to start making smaller joints, generally, but I'm…Continue

Tags: armatures, steel

Narrow Joints

Started this discussion. Last reply by philthethrillkill Nov 18, 2013. 8 Replies

Does anyone use/know of a method to make very small joints for a ball and socket armature?  I'm talking about knee joints in particular, so they can actually be hinge joints if that makes it any…Continue

Tags: armatures, knee, joint, armature, small

Wholesale Jewelry Supply for Armatures

Started this discussion. Last reply by Mike Jul 6, 2014. 3 Replies

I've been trying to find a good way to get parts for a ball and socket armature I'm constructing.  Over at stopmotionstore.com (animateclay), I saw that they were selling all of these different…Continue

Tags: rods, steel, bearings, barbells, socket

Silicone Casting Question

Started this discussion. Last reply by Jonathan Hartman Apr 10, 2013. 3 Replies

I'm trying to find something I can use to block off parts of the mold, so I can cast the head of a puppet with two solid chunks of color.  I am using Ecoflex 00-30, and when I tried painting it into…Continue

Tags: ecoflex, curing, smooth-on, mould, mold

 

Jonathan Hartman's Page

Latest Activity

Ethan Bartholomae replied to Jonathan Hartman's discussion US Sources for 1018 Flat Bars?
"McMaster Carr (mcmaster.com) is a fantastic source for materials and tools of various kinds. They can be a little pricey at times, but their selection of plastic and metal is pretty extensive. I get all of my 1018 and O1 steel as well as brass and…"
Dec 2
Jonathan Hartman replied to Jonathan Hartman's discussion US Sources for 1018 Flat Bars?
"Thanks, guys.  I ended purchasing the 1/4 x 1/8 bar that I found, but if it proves to be too large, I probably will just stick with brass."
Nov 26
Samer Khaleel replied to Jonathan Hartman's discussion US Sources for 1018 Flat Bars?
"Hey Simon, in the model shown I used plastic from a broken router cover. the joint is very good but it bends over time,and I had to use a nut with 3 mm screw. I'm working now on fiberglass sheet ~2 mm thick , I think it will be more stable and…"
Nov 22
Iulian Demetrescu replied to Jonathan Hartman's discussion US Sources for 1018 Flat Bars?
"I usually go to Bunnings (the Home Depo counterpart here in AU) and they have a range of square and flat steel bars in small lengths(1m). For the B&S i use 6x6 mm square bar, cut to fit the size i want and filed to the desired shape. I use also…"
Nov 18
Simon Tytherleigh replied to Jonathan Hartman's discussion US Sources for 1018 Flat Bars?
"@Samer Can you get enough stiffness in the joints with plastic? And what type of plastic have you used? @Jonathan Have you seen this video? https://www.youtube.com/watch?v=iaR8A6QXeoI Brass seems to be his material of choice even for the tiny…"
Nov 18
Samer Khaleel replied to Jonathan Hartman's discussion US Sources for 1018 Flat Bars?
"Hi,  I'm working on a B&S armature using plastic bars and balls, its much easier to find materials and also easier to work with tell me if it can be useful."
Nov 17
Jonathan Hartman posted a discussion

US Sources for 1018 Flat Bars?

Hi, everyone!For my last B&S armature, I used brass, which worked fine, but I'd like to try working with steel on the next one.I'd really like to start making smaller joints, generally, but I'm having a heck of a time trying to find a supplier for small flat bars of 1018.  1/8" x 1/4" seems to be the thinnest I can find (which would be fine for a ton of applications, but I'm looking to go smaller).  Would it even be a sensible material to use at a smaller size?  Is there something else I…See More
Nov 11
Jonathan Hartman commented on Regina Resende's photo
Thumbnail

Armature Stop Motion

"I used Google Translate, so my understanding of your process might not be perfect, but did you just file the balls by hand? Essentially by eye? Does that not create inconsistency in the motion of the joints?"
Sep 19, 2015
Mike replied to Jonathan Hartman's discussion Wholesale Jewelry Supply for Armatures
"Not sure about buying wholesale, but the barbells you'd be looking for are typically for tongue piercing (also belly, nose, ears, ec). The stainless steel ones are ideal, but they also sell plastic ones if you're looking to experiment with…"
Jul 6, 2014
Austin Taylor replied to Jonathan Hartman's discussion Wholesale Jewelry Supply for Armatures
"I would love to hear what kinds of things you ended up buying! I'm in the market for an armature myself, but I don't have welding supplies and my budget is slender at best. If you could just give me some keywords and particularly useful…"
Jul 3, 2014
philthethrillkill replied to Jonathan Hartman's discussion Narrow Joints
"hot  needles into mardi gra beads with bigger ones hollowed out mealted  and streached"
Nov 18, 2013
StopmoNick replied to Jonathan Hartman's discussion Narrow Joints
"This is the camera with skinny emu legs, nothing but wire in there.  I don't think I could have done joints that thin, even with thin chain plates, because the Allen key heads on the screws stick out on one side, and the nut sticks out the…"
Nov 17, 2013
Jonathan Hartman replied to Jonathan Hartman's discussion Narrow Joints
"Thanks, all! I think I'll just end up using wire.  It might make animating slightly more difficult, but I've got to get moving with this project. I think the ones on the stop motion shop would still be too wide, anyway.  In the…"
Nov 16, 2013
susanna replied to Jonathan Hartman's discussion Narrow Joints
"you could also check out the joints that are used in glasses, they can often be tightened and are tiny.  or tim spring, who makes really small joints: http://www.stop-motion-armature-components.com/ ;"
Nov 15, 2013
Simon Tytherleigh replied to Jonathan Hartman's discussion Narrow Joints
"Perhaps the best thing is the threaded rods with integral balls - no threadlock or brazing necessary! Reasonable value too."
Nov 15, 2013
Paul replied to Jonathan Hartman's discussion Narrow Joints
"Don't think I had ever visited the Stopmotionshop before! Some pretty nice stuff there!!"
Nov 15, 2013

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