[robalo01]

I'm injecting Bear's 5.25" side-port mold. WIth one color, no problem, eveything comes out great, but whenI add a tip, and then pour i get one or two bubbles (ranging from bb to a pea) in the top cavity near the tail/body splice.

I assume air is getting trapped in there and the vent is stopped by the pre-poured tail. Strange thin is, that even if i try and leave the top cavity solid (no tail insert), i still get the bubbles.

Would adding an additional vent at the splice be effective? or, am I ruining the mold?

[jimcline]

robalo01, on 08 February 2010 - 03:36 PM, said:

I'm injecting Bear's 5.25" side-port mold. WIth one color, no problem, eveything comes out great, but whenI add a tip, and then pour i get one or two bubbles (ranging from bb to a pea) in the top cavity near the tail/body splice.

I assume air is getting trapped in there and the vent is stopped by the pre-poured tail. Strange thin is, that even if i try and leave the top cavity solid (no tail insert), i still get the bubbles.

Would adding an additional vent at the splice be effective? or, am I ruining the mold?

Have you tried talking to Bear? I think I would do that before I started cutting on a mold. Try warming the mold a little first.

[152nd Street Baits]

jimcline, on 08 February 2010 - 06:34 PM, said:

Have you tried talking to Bear? I think I would do that before I started cutting on a mold. Try warming the mold a little first.

Are you topping off the mold? You need to do that on the multi-cavity hand inject molds.

[robalo01]

1. It tends to gert worse as the mold worms up, so that isn't the problem.
2. I don't have dents (ususally associated to shrinking plastic), I do top offthe molds. And, the problem doesn't appear with single colored baits, only with colored-pre-poured tips.

Has anyone else experienced this?

I tried injecting faster, slower; raising and lowering the temp of the plastic, with no noticable diference.

[Bass-Boys]

robalo01, on 08 February 2010 - 07:56 PM, said:

1. It tends to gert worse as the mold worms up, so that isn't the problem.
2. I don't have dents (ususally associated to shrinking plastic), I do top offthe molds. And, the problem doesn't appear with single colored baits, only with colored-pre-poured tips.

Has anyone else experienced this?

I tried injecting faster, slower; raising and lowering the temp of the plastic, with no noticable diference.

Is the pre poured tip covering a vent hole ??

[bear21211]

Robalo
The mold has vents machined on the face of the mold so the mold is vented.
I have shot quite a few of these and do not have to change the way I shoot the molds.
I have not had anyone else have this problem that I know of yet. Give me a call tomorrow and
I will do what it takes to get you going. Maybe something is wrong with the mold and I need to swap it out.
I do not know what is going on with it as I have not any complaints before this one. I wish I could tell you
what was going on with it but I do not know. Call me and I will swap the mold out and try that.
Bear

985-969-1390

Bass-Boys, on 08 February 2010 - 07:54 PM, said:

Is the pre poured tip covering a vent hole ??

This post has been edited by bear21211: 08 February 2010 - 10:57 PM

[robalo01]

I am inclidened to believe Iit's something I am doing wrong and not the mold, but i'll get in touch.