[Fozzie]

Forgive my ignorance, but in the product linked to below, what are "frames"?

http://www.megahobby.com/platformerlargeconstructionset13-frameswover100detailspegasus.aspx

 

[djnick66]

Forgive my ignorance, but in the product linked to below, what are "frames"?

http://www.megahobby.com/platformerlargeconstructionset13-frameswover100detailspegasus.aspx

what people also call sprues. Frames or gates are probably technically more accurate since a sprue is the actual spot where the plastic would flow into the part itself versus the whole gate or frame.

 

[Fozzie]

Thanks. I've never seen that specified on a kit before.

 

[hal9001]

Styrene in a molten state is called sprue. It's what is injected into a mold.

hal9001-

 

[btbrush]

Actually, the sprue ( or frame) is the path the plastic takes to the part. And the gate is the connection between the sprue and the part itself. The plastic is heated to a semi-vicous state, but it's still quite thick, which is why it takes tons of clamping preassure to keep the mold closed. The plastic is then cooled to almost solid within seconds. This goes back and forth for sometimes 30 times a minute. It's like slowing from 13,000 mph to 2 mph in 7 minutes.

 

[Aurora-brat]

Molding Terminology

As pointed out, the "sprue" is the large opening where the molten styrene is injected into the mold. The plastic travels along the "runners" to reach the part cavities. It enters the part cavity through a narrow opening called the gate.

Not sure where the term frame comes from, but it must be used to describe the complete runner system that holds the parts.

Tory

 

[djnick66]

as long as no one calls it a SPRUCE... I hate that.

 

[btbrush]

And the area that goes from the Spruce to the part is called a "Bill".

 

[btbrush]

As long as the plastic goes through the thingy and fills the whatschajiggy that winds up on my worktable, I don't care what it's called.