Fishous Posted May 14, 2009 Report Share Posted May 14, 2009 I did some experiments last night. On a 5.25" aluminum 4 cavity senko mold, the only time I could get a dent was when I let the pour cool longer than 3 minutes before de-molding. Quote Link to comment Share on other sites More sharing options...
wildtail97 Posted May 14, 2009 Report Share Posted May 14, 2009 Know we are getting somewhere! Shooting into a smaller port makes sense, thanks Bear, Mike and everyone for experimenting on this issue! Quote Link to comment Share on other sites More sharing options...
bear21211 Posted May 14, 2009 Report Share Posted May 14, 2009 Mike The denting was happening on the smooth part of the mold (Egg Sack) exact same place every time. The port on the mold was the same. All we did was turn the same mold upside down. They are a side port Injection . What this did was moved the vent to the top of the mold when shooting the mold this way, the vent stays clear until the plastic reaches it which now would be at the end of the fill instead of at the beginning. I think what it did was allow the gas and air to fully escape from the mold as it was shot. Before the vent would get filled and you still had open cavity to be filled. Thus making the air have to come back toward the injection port. We are going to try several more things to see what else we can come up with. I really like the injection as it allows us to make baits with much thinner appendages. The thin appendages have not been an issue with them b ut the larger part of the baits are where we are having problems. Larger portion more plastic , and more shrinkage. We will keep you guys informed on how it is progressing. Bear Quote Link to comment Share on other sites More sharing options...
