senko mold

[Wallyc14]

i am not new to shotting plastic but i just bought the mold and want to short cut the learning curve what  temp does this mold like and how long do i hold

[MonteSS]

My stick molds (Dels) like to be shot slow and steady. I hold 10-15 saecs and usually need to top off twice as the plastic gets sucked in.

[Lamar]

  I've never had a temp issue with this mold. Like said hold for a few seconds and then top it off. It shoots very easy.

[jmatheny9]

My stick mold from bears doesn't like to play nice. The top bait seems way to close to the top of the mold and even when shooting pretty cool it will dent if I don't hold around 5 seconds of pressure then continue topping off until it stops pulling plastic. The reason for so little time with pressure for me, is that my injector covers more than half of the opening for that last bait and just seems to work better if I have less pressure time.

This problem is more than likely not a problem with the do it senko but that's me. Other than that, sticks are very easy to shoot and do half pour laminates.


      -Jeremiah      @bullfroglures

[siscojj]

I HAVE THE DO-IT SENKO MOLD AND IT LIKES TO DENT ESPECIALLY AFTER IT GET HOT SO I TOOK BKJ ADVICE AND HOLD PRESSURE FOR ABOUT 15 SECONDS AND THEY COME OUT JUST FINE IT CAN BE A PAIN UNTILL EVERYTHIG GET GOOD AND HOT BUT AFTER THAT YOU CAN GET THEM MADE PRETTY QUICK............JAY

[Wallyc14]

My stick mold from bears doesn't like to play nice. The top bait seems way to close to the top of the mold and even when shooting pretty cool it will dent if I don't hold around 5 seconds of pressure then continue topping off until it stops pulling plastic. The reason for so little time with pressure for me, is that my injector covers more than half of the opening for that last bait and just seems to work better if I have less pressure time.

This problem is more than likely not a problem with the do it senko but that's me. Other than that, sticks are very easy to shoot and do half pour laminates.


      -Jeremiah      @bullfroglures

i have same 5 bait mold same problem you can make a sprue extension from three half inch copper couplings and a small piece of copper pipe it helped my mold some but i still have problem wjth top bait thats why i bought do i t mold

[jmatheny9]

Thanks for the tip wallyc. I think I'll just deal with it for now and try out your pipe idea until I can save enough for it


      -Jeremiah      @bullfroglures

[Wallyc14]

Can't take credit for that one got it from another forum but it works I have bears k grub mold had to do the same

[pjmcla]

Bear's and Bass Tackle both sell sprue extenders as well.

[jmatheny9]

Instead of selling sprue extenders the should just fix the problem :p not a single of my ccm molds do it


      -Jeremiah      @bullfroglures

[ctom]

Sometimes the "fix" seems so simple.....

Increasing the diameter of the sprue channel would help a lot in preventing denting, but then that portion of plastic left over is seen as waste....$$$ come into play here. Making the channel larger may require re-tooling the machine too, which of course leads to more $$$ for the mold.

Those fortunate few who attended the get-together know how much detail and bench testing is done before a new product is released. Taking the high road as Do-It did with the Senko worm mold, they had to be positive that the mold did it's job well and without issues before it flew to public hands. I'm not certain that the same could be said of other mold makers' products. One would think that after being called out on issues with certain baits/molds these other companies wouldn't remedy the problem.

[andrewlamberson]

Applying "back pressure" to keep a thick bodied bait (or plastic part) from denting is much more likely to be successful than the sprue extender. Maintaining pressure on the injection is a common method to offset dents in plastic part molding machines. Another common way to minimize denting is to use a foaming agent but I haven't found a way to make that to be practical for our bait making application.

The sprue extender would be helpful if you are getting hollow heads on the baits (because the bait has pulled all the plastic from the sprue) but most likely will not help with the dents in the baits (unless there is a lot of plastic in that extender and putting a pressure on the other plastic within the mold which doesn't seem likely).

Remember ...LIGHT pressure!!! Pushing too hard on a hand injector is just looking for a bad accident if something slips and hot plastic starts shooting around the work area!

The other way to minimize denting is to shoot the bait as cool as possible (make sure you get your plastic to 350 on the first heat) and then letting it cool to the lowest temp that you can successfully shoot the bait. This works the best for me.

Andy

[Wallyc14]

Thanks for all the info guys