John Polacchi
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  • Santa Rosa, CA
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John Polacchi's Discussions

Silver Brazing "small" balls to rods

Started this discussion. Last reply by John Polacchi Mar 31. 10 Replies

Here's another subject I know has come up in the past,or at least I know that "silver brazing" is no stranger to subject matter.This is one skill I have yet to really master. I find myself needing to…Continue

Possibly an old subject but...ridding a urethane rubber surface of gloss/shine to get a "matte" finish

Started this discussion. Last reply by John Polacchi Mar 20. 4 Replies

Does anyone know how you can remove/get rid of the glossyness/shine of a urethane rubber casting?I know that silicone you can use a dulling/matte powder that you dust onto a tacky surface when…Continue

BASIC SHOP SAFETY

Started Jan 29 0 Replies

Hello everyone,I thought I'd put in something a little shorter and save the next time for more involved subjects and information.Basic "shop" safety,a no brainer,right?I'm guessing that most of us in…Continue

Basic Machine shop calculations: RPM formulas

Started this discussion. Last reply by Zaid Feb 14. 34 Replies

Here's an important category for "machining" purposes regardless if you are machining armatures or not.If you are *NEW* to running a drill press, mill or lathe,these are the essentials you need to…Continue

 

John Polacchi's Page

Latest Activity

John Polacchi replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"Well,one could(if they have the tools) either mill or grind a slot on the surface of the bearing for the rod to sit,set it in with at least "one" screw to hold in place then silver braze it.Basically filling in the slot with silver solder…"
Mar 31
Greyguy replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"just an idea I had about small ball sizes was to solder to the side of the ball but it would limit twisting action"
Mar 31
John Polacchi replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"Yeah,I have a very "crude" and simple" sketch.All the stuff I drew up over the weekend is in the recycle bin.If you wanted to braze to the ball,wouldn't you just need to  orient the ball(after you braze it in with a rod) to…"
Mar 31
Greyguy replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"I have been thinking for a 3/32 ball joint the rod can be soldered to the side of the ball instead of drilling a hole in the ball. Got pictures of what your trying to do? "
Mar 31
John Polacchi replied to Danny Samuels's discussion Is Flexible Urethane Foam an Option?
"Nick,wouldn't that also depend on how dense the foam is and if you are just using it to fill in "large" body parts(like thighs or the upper torso) and to help reduce the overall weight of the puppet?"
Mar 31
John Polacchi commented on rick gibson's photo
Thumbnail

Gorilla puppet

"AWESOME!King Kong!"
Mar 31
John Polacchi replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"Well,"no twisting" that I can think of.I'm actually working on designing "small" jointed hands which is proving to be quite troublesome.The two ball joints will both be 3/32.One at the wrist and the other at the base of the…"
Mar 31
Greyguy replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"I would say no to epoxy but I am sure others have tried it and I worked but I would not trust it if it had to twist."
Mar 31
John Polacchi replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"Well,part of this is stemming from something I'm working on(been working on) for a long time and I'm just trying to get it off the ground(so to speak).While the scale I'm working in I think would be considered "larger" than…"
Mar 31
Greyguy replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"I use stay brite solder for the 1/8 ball joints as the melting point is low I hold the 1/16 rod in a vise and put the ball on top with the flux and solder in the hole then I put some metal stock on the ball and heat it up with a propane torch and…"
Mar 30
John Polacchi replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"I know Micro Mark has some decent tools for handling "miniature" parts such as bearings and screws,nuts and bolts, as well as "miniature torches".Those might be helpful?I'm just concerned that I'm going to waste allot…"
Mar 29
Matthew Metcalf replied to John Polacchi's discussion Silver Brazing "small" balls to rods
"I have been making ball joints for character I am currently working on, and I also have been using ss balls as small as 1/8'' (I work better with fractions). I go about it the same way as I go about using 1/4'' ss balls, using a…"
Mar 28
John Polacchi posted a discussion

Silver Brazing "small" balls to rods

Here's another subject I know has come up in the past,or at least I know that "silver brazing" is no stranger to subject matter.This is one skill I have yet to really master. I find myself needing to braze very small ball bearings to very small diameter rods.As small as .0625 to .125 with rod ends ranging from .03125/.040 to .0625 and the metric equivalents.Pretty much anything larger than .125 is a "normal" ball joint in my mind. I find it somewhat intimidating,not just because I have never…See More
Mar 28
John Polacchi replied to Sarah Brawn's discussion Protecting Ball&Socket Armatures from Silicone
"I think you'll have to contact Sarah (above) for that.I was speaking "generally" for a number of puppets I've been trying to work out for a while.I'm more or elss narrowing thinsg down.Most my time these days is in…"
Mar 26
John Polacchi replied to Sarah Brawn's discussion Protecting Ball&Socket Armatures from Silicone
"I'm not sure I want to monkey around much making the Dragon Skin silicone softer than it already comes.With that being said (and what you have mentioned),it appears that at least for "the hands" on my armatures that I should probably…"
Mar 26
John Polacchi replied to Sarah Brawn's discussion Protecting Ball&Socket Armatures from Silicone
Mar 26

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My super smooth stop-motion!

Started by Mikael Ohlson in ANIMATOR TALK. Last reply by StampMotionStudio 1 hour ago. 1 Reply

Hello! I have just recently finished a new video that is now on YouTube. As always, I aim for animation just as smooth as CG. Tell me what you think of it!…Continue

Slow Motion in Stop motion

Started by Santino Vitale in YOUR STOPMO FILM PROJECT. Last reply by Antonio J. Cebrián 13 hours ago. 8 Replies

I'd been experimenting with the possibilities of slow motion and how to achieve that slick, ultra slow look in stop motion. And after a while of testing, I decided to make a short film to showcase the effect. It is a spoof of all those fancy perfume…Continue

Tags: short, effects, film, CGI, fps

Classroom Set

Started by Dinoman217 in STOP MOTION SETS. Last reply by Dinoman217 14 hours ago. 4 Replies

Hello Guys! I'm trying to create a miniature classroom for one of my next films. Any ideas on how to make a Classroom set?Continue

Tags: Miniature, Set, Classroom, Dinoman217, Selick

Flesh-Colored Clay

Started by Dinoman217 in CLAY. Last reply by Don Carlson 19 hours ago. 1 Reply

Hey guys! I know from experience that you can mix existing colors of Plasticine to get clay to get new colors. Do you guys know how to make flesh-colored clay?Continue

Tags: Peter, Selick, Henry, Lord, Nick

Advanced tie down methods

Started by Steven Topham in ANIMATOR TALK. Last reply by Steve Copeland 22 hours ago. 6 Replies

I've historically always done the rod in feet, plugging holes method, but really want to up my game.I keep looking for behind-the-scenes footage that may give me a glimpse of how the larger studios do their tie downs. From what I gather, Laika does…Continue

Desperate for a Ball and Socket Armature

Started by Seigfrid Cabral in NEWBIE CORNER. Last reply by Yorwick on Monday. 1 Reply

I'm kind of desperate for a ball and socket armature. I want an armature I can use without worrying about breaking in the middle of a scene. Sadly, the materials here relating to machining metal armatures are close to none, I can't afford the…Continue

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