The Imperial Shipyards

Imperial Creative Engineering => Resources and References => Topic started by: DocOutlands on May 27, 2009, 01:48:56 PM

Title: First mold!
Post by: DocOutlands on May 27, 2009, 01:48:56 PM
OK!!  I took the plunge!!  I made a mold...  It is sitting on the shelf, curing.  Inside - a senate holocam droid and a survival lamp thing.  Can't wait to see if it worked!!
Title: Re: First mold!
Post by: narceron on May 27, 2009, 02:35:32 PM
Yeah, I have thought about trying it out, but I think I'd just get ol clonehead to do it for me.

Hmm, still, would be a neat skill to pick up down the road.

Can't wait to see the results, :)
Title: Re: First mold!
Post by: Clonehead on May 27, 2009, 03:03:02 PM
Good luck on the mold, Doc. I am also anxious to see how it goes.
Title: Re: First mold!
Post by: segnett on May 27, 2009, 03:26:15 PM
Me too, can't wait to see the outcome!!
Title: Re: First mold!
Post by: Tamer on May 28, 2009, 06:38:25 AM
Well lets just see how this turns out.
Title: Re: First mold!
Post by: DocOutlands on May 28, 2009, 11:29:02 AM
Wow - that worked out WAY better than I had any right to expect.  Pics will follow after lunch.

5-10 minute cure on the plastis I used.
Title: Re: First mold!
Post by: DocOutlands on May 28, 2009, 01:59:25 PM
Awrighty - here we go.  I picked out a couple of pieces of gear I wanted to make copies of - LOTS of copies - for my first attempt at molding.  Naturally, I didn't go easy on myself.  The two pieces had lots of angles, curves, undercuts, protuberances, and so on.  I can't to anything easily, y'know.

Fig1:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/001.jpg)

Here are my two masters, tacked to the bottom of a cig-box, just the way Clint does it.


Fig2:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/002.jpg)

In with the HS3!


Fig3:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/003.jpg)

This morning, after peeling away the box and foil-paper lining.
Title: Re: First mold!
Post by: DocOutlands on May 28, 2009, 02:02:14 PM
Fig4:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/004.jpg)

Out comes the fusion lamp.


Fig5:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/005.jpg)

Yeah, look at that cavity.  I'm screwed.


Fig6:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/006.jpg)

Out comes the holocam droid.  Wow, that is one TINY exit hole to pass thru!
Title: Re: First mold!
Post by: DocOutlands on May 28, 2009, 02:06:26 PM
Well, I *guess* the mold did ok - no pieces of loose pink stuff came out with the masters.  I guess that means it is time to mix up some resin and pour.

Fig7:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/101.jpg)

Here's the resin I used.  Alumilite products all the way.


Fig8:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/102.jpg)

Overtopped molds.  I'll prolly scrape off the excess next time I pour.

Turns out, this product has a demold time of 5-10 minutes.  Guess we'll see in REAL short order how badly I screwed things up.
Title: Re: First mold!
Post by: DocOutlands on May 28, 2009, 02:29:49 PM
Out pops the very first pieces!!

Fig9:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/104.jpg)

Fusion Lamp and its "little brother"


Fig10:
(http://i169.photobucket.com/albums/u239/LosLejanos/first%20mold/105.jpg)

Holocam and its "little brother"


They didn't come out perfect.  The lamp had a couple of small air bubbles in a couple of the innermost corners, but they were almost unnoticeable.  The Holocam had the most egregious problems, with the topmast and long-eye not getting filled.  I'm going to try squeezing the mold together next time, then letting go of it after I have some resin poured in.  Maybe that will create suction enough to draw resin into the longer areas. 

All in all, I'd say it was a credible first effort, yielding two usable items, given a little cleanup.  Maybe next time I'll try something easier, like a BAD R2 dome...
Title: Re: First mold!
Post by: StenHunter on May 28, 2009, 04:51:56 PM
Great job! Resin and molding can take some practice and I think you've gotten off to a good start.
Title: Re: First mold!
Post by: Clonehead on May 28, 2009, 06:15:29 PM
Nice job on the mold, Doc! I usually pull the inner foil lining out before I pour the mold material but you did fine. For the upper eye mast, try pouring just that little bit and stop long enough to squeeze the air out of that area then, try pouring the rest. For that front facing eye, you may need to cut a vertical slit from the length of that protrusion, up to the top of the mold. That would give the air a rout of escape and would leave a paper thin piece of resin to the castes piece where you made the cut that would be real easy to clean off.
Title: Re: First mold!
Post by: DocOutlands on May 28, 2009, 07:08:00 PM
I *knew* I'd drag you out of Branson for this!!   8)

Yeah, I realized the liner should have come out just about the time I started pouring the HS3!    :o  Was a bit late at that point.  On the antenna - GREAT!  The squeeze thing was going to be my next effort.  Cutting a channel for that long eye is gonna get interesting!  I sure couldn't pick an easy couple of pieces to start with, could I??
Title: Re: First mold!
Post by: Tamer on May 29, 2009, 05:06:44 AM
looks like a pretty good turn out to me.
Title: Re: First mold!
Post by: Clonehead on May 29, 2009, 05:24:54 AM
It's a learning process, buddy. You get better as you go.
Title: Re: First mold!
Post by: segnett on May 29, 2009, 06:01:26 AM
Pretty good.  Looks like you've already done better than most people's first casts.
Title: Re: First mold!
Post by: DocOutlands on May 29, 2009, 07:46:43 AM
Well, I will say I've been watching ppl for years and reading how they cast their stuff.  I did some work in plaster a few years back, but nothing this serious.  Thanks to Clint and my wife, and cheered on by my kids, I got after it and turned out a credible first effort!

I'm thinking I'll take another crack at it today and see if I can beat the air-bubble issue quickly and easily.  Can't let the resin sit around go bad, after all!
Title: Re: First mold!
Post by: narceron on May 29, 2009, 08:43:02 AM
I think I'd like to learn to make dio pieces like that, maybe even computer screens and the like, :)