Ray Gun

[Pzak]

Here is a gun I machined for Space Girl kit. I machined both halves of the mold in one piece of wax, cut it in two, used a styrene tube as a key and injected it with resin.

 

[Pzak]

Forgot to add that I modeled it in Pro-E

 

[Cottonball]

Dang, that's a clean casting! Simple, but (as you've proven) very effective! Thanks for sharing!!!

Eric

 

[Pzak]

Thanks Eric,

It's easy to get a good casting with hard wax molds and a pressure pot. I cut thin vents, (.001") to prevent air bubbles and could use C clamps to press the two halves together to prevent flashing.

 

[franz bolo]

Here's a link to the Space Girl PZAK sculpted.

http://www.therpf.com/showthread.php?t=59969


FB

 

[Pzak]

LOL!

So there was a board that Marc didn't post his first kit on?!?

 

[RickDTM]

LOL!

So there was a board that Marc didn't post his first kit on?!?

You're a bad man Mikey P....

 

[MooCriket]

Here is a gun I machined for Space Girl kit. I machined both halves of the mold in one piece of wax, cut it in two, used a styrene tube as a key and injected it with resin.

Very cool:thumbsup

 

[Treadwell]

Here is a gun I machined for Space Girl kit. I machined both halves of the mold in one piece of wax, cut it in two

I don't get it. The wax was one big block that you machined the negative space into, then cut it in half? How do you machine a hole inside a solid object?

(Nice work, btw)

 

[propologist]

what programs are you using to create it ?

edit I didn't read the second post..lol

 

[Gigatron]

I don't get it. The wax was one big block that you machined the negative space into, then cut it in half? How do you machine a hole inside a solid object?

(Nice work, btw)

^This^

Could you explain the process, 'cause I'm a bit perplexed :wacko :lol

-Fred

 

[Stinky Dragon]

My guess is that he might have machined each half of the gun onto the opposite sides of a block of wax and then cut that in half.

 

[Pzak]

Rick - You can't touch this! :love

Stinky Dragon - you are correct!

Sorry for the confusion. what I should have said was that I machined the negative of each side of the gun on one long block of wax at one time. I then cut the block in half and put the two surfaces together to form the mold.

Machining both halves at the same time made a perfect mate since I didn't have to change out blocks and re-zero.

Propologist - I made the gun in Pro-E, and then made both halves of the molds in Pro-E as well. Then used BobCad to generate my NC code and Machined it on my desk top CNC.

 

[Treadwell]

Oh, I see. Neat. I guess you machined the peg holes at the same time, then, to ensure they'd line up precisely?

 

[Pzak]

Exactly!

Actually, it was one long program to cut it ,and only one tool change for finishing the surface of the gun. You might be able to see the stair steps in the injection hole, I didn't bother to finish that.