Charly2020 Posted August 31, 2020 Report Share Posted August 31, 2020 Hello all, I need help with my baits done in a aluminum custom mold. The mold has 6 cavities and all the baits when they are injected have air bubbles in the rib. I've tried everything but I can't get rid of these bubbles. I use a vacuum pump, suck up the plastic and then turn the injector upright to eject a small amount,etc etc. Can someone help me? Thanks Quote Link to comment Share on other sites More sharing options...
SlowFISH Posted August 31, 2020 Report Share Posted August 31, 2020 How is the mold vented? I get the same thing on some baits due to the ribs/venting layout. I found venting nearly each rib can help - as well as trying to have the vents "vertical" in orientation when you shoot the mold so the air escapes up and out of the cavity. And the vents don''t have to be big - super small.... just to let that last little bit of trapped air escape. J. Quote Link to comment Share on other sites More sharing options...
bryanmc Posted August 31, 2020 Report Share Posted August 31, 2020 Agree with slowfish, looks like a venting issue. Have you talked to whoever cut the mold? Quote Link to comment Share on other sites More sharing options...
McLuvin175 Posted August 31, 2020 Report Share Posted August 31, 2020 Ribbed baits are always fun and can present challenges to venting. Where is the parting line in relation to the bubbles? The fact the bubbles are lined up in a row suggests thats the top of the bait in relation to its orientation in the mold when shot. Maybe? Quote Link to comment Share on other sites More sharing options...
Judgie Posted September 1, 2020 Report Share Posted September 1, 2020 Bubbles are in the mold not the plastic. Need better venting of the mold. Quote Link to comment Share on other sites More sharing options...
Rudy519 Posted April 29, 2022 Report Share Posted April 29, 2022 Any update on if you had this problem fixed. Have the same thing going on Quote Link to comment Share on other sites More sharing options...
BTC Posted May 31, 2022 Report Share Posted May 31, 2022 Same here and cant figure it out Quote Link to comment Share on other sites More sharing options...
