Basscandy92040 Posted February 28, 2011 Report Share Posted February 28, 2011 Ok, so I tried my first go round at injecting with a blending block and twin injectors from Bass Tackle...I did just straight OLD plastic no salt to get the feel....Pushed too fast and got air pockets and then just right and they were ok... So, I did my salt (floured? put it a blender to make it finer) I used LC 536 8 oz and 1.5 tbs of salt...no softner...and went for it..My version of baby bass...I went red highlight and white pearl.... Problem...on a few of the molds, the middle two shot only half way and the end ones did fine...Push to fast? or slow? or what? Thanks for any tips. Cliff Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted February 28, 2011 Report Share Posted February 28, 2011 (edited) The cavities do not all fill at the same rate. When you inject, the inlet tube fills. Once the plastic hits the bottom of the tube, the top cavity fills to completion, with a little plastic entering the bottom cavity and less into the other two. Once the top cavity fills, the bottom cavity fills next. Only when this is full do the two centre cavities fill. Maybe the bottom fills first, then the top, but that is not important. There could be a number of reasons that your centre cavities are not filling. The plastic may not be upto temperature or you simply need to keep the pressure for a second longer. You should feel a measure of resistance when the plastic has filled the bottom cavity, but you must maintain the pressure to fill the middle two, then the resistance will increase to maximum. I have never used an injector. I am just applying engineering principles and what I have seen when vacuum pouring with a clear plate over a one sided mold. Dave Edited February 28, 2011 by Vodkaman Quote Link to comment Share on other sites More sharing options...
SHK Posted February 28, 2011 Report Share Posted February 28, 2011 make sure your temps are close to each other, use an infrared thermometer. Quote Link to comment Share on other sites More sharing options...
Basscandy92040 Posted February 28, 2011 Author Report Share Posted February 28, 2011 Vodkaman and SHK, Thanks to you both for your help....I did use a IR therm to check the temps....I will try to maintain the pressure longer and see what happens....Thanks again... Quote Link to comment Share on other sites More sharing options...
