Bondo Sculpting

A soon-to-be familiar sight.

A soon-to-be familiar sight.

Bondo Filler.  You can apparently use this stuff for everything, including sculpting on the cheap (not to be confused with Bondo Spot and Glazing Putty) .  Since I have absolutely no idea how good I’ll be at sculpting something intricate, Bondo sculpting will be a decent learning experience.

Rough guide.

Rough guide.

Psuedo-cylinder (animated!)

Psuedo-cylinder (animated!)

Lots of stuff has been going on, but not enough to justify the lack of progress I’ve been making.  I sat back down at the desk today to get on with making the custom ankle hydraulics.

Gooped up...

Gooped up...

...for a minty-fresh release!

...for a minty-fresh release!

I read that chap-stick can be used as a cheap mold release agent.  Sure enough!  (They only had spearmint in the check-out isle at the grocery store, but I don’t think Bondo can taste the difference.)

I was eager to see what sculpting was going to be like.  When I did jewelry in the past, it was more about precise cutting and forming.  This is continuous additive and subtractive carving.

Not bad!  However, the biggest surprise for me was actually how the Bondo worked.  The texture goes from goop, to flaky eraser, to stiff rubber, all very quickly.  It’s not as hard as I expected — I was expecting rock.  But it instead has a slightly rubbery texture that you can slice into with a sharp blade.

I was really only after a super basic shape at this point, but between blades, files, and my dremel, I didn’t have too hard of a time getting this far.  I only need to do a basic shape because I want to make the bottom and test functionality before I get any more detailed.

Polycap fitting

Polycap fitting

I won’t be doing much more to the top until I complete the bottom, although now I’m afraid that could take longer than I’d like.  A week ago, I ordered a couple of different sets of polycaps from HobbyLink Japan shipped via SAL, but with the earthquake now, I figure they could be delayed a bit.

I also have to admit, I’ve been using the automatic settings on my camera more.  It’s a lot easier for these WIP photos since I don’t have to set up every shot.  I hope the camera gods won’t smite me.

Comments (1)

  1. 11:13 am, March 18, 2011zheng  / Reply

    Looking good! Bondo is a real time-consumer isn’t it? Cuz now you gotta fill the air holes on that piece you made.

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