The Blue Foam Dart mod is something I came up with after reading through and trying several similar mods by eclypse and Kristin. Credit should go to eclypse for doing the majority of the research on this. I am only making a slight change to his original idea. This is a bit different in that it uses a stirrer rather than a straw and I promise you that if you try it you will be happy! I use this on a 510 but I'm sure it would work on any cart with a bit of adjusting. I've used the same 2 "darts" for 2 weeks now and have never had a leak or left any juice in the bottom of the cart. Not once! I know how crazy that sounds but just try it!
You will need a stir straw about 2mm in diameter (some I've seen are larger) and some blue aquarium foam.
Cut the stirrer to 12-13 mm. Cut a section of foam to the dimensions shown below. You don't need to be exact as every one I've made works.
Now pinch the 12mm end of the foam and twist it to form a thin area that you will be forcing into one end of the stirrer.
What you should end up with is shown below. Try to force the foam down as far as the arrow shows below.
Now take scissors and trim the end so that the total length is about 22mm.
Fill your cart up (I get about 12-13 drops) and drop the dart in. Use tweezers to straighten everything up. Add a drop or two on top.
You are good to go! The beauty of this is that, for some reason, it runs dry every time and it's very easy to refill. Just pull out the dart, fill and replace it. I've used the same dart at least 20 times.
Enjoy and please let me know if it works for you as well as it does for me.
PS. It works just fine at HV as well!
You will need a stir straw about 2mm in diameter (some I've seen are larger) and some blue aquarium foam.
Cut the stirrer to 12-13 mm. Cut a section of foam to the dimensions shown below. You don't need to be exact as every one I've made works.

Now pinch the 12mm end of the foam and twist it to form a thin area that you will be forcing into one end of the stirrer.

What you should end up with is shown below. Try to force the foam down as far as the arrow shows below.

Now take scissors and trim the end so that the total length is about 22mm.

Fill your cart up (I get about 12-13 drops) and drop the dart in. Use tweezers to straighten everything up. Add a drop or two on top.
You are good to go! The beauty of this is that, for some reason, it runs dry every time and it's very easy to refill. Just pull out the dart, fill and replace it. I've used the same dart at least 20 times.
Enjoy and please let me know if it works for you as well as it does for me.
PS. It works just fine at HV as well!
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