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I have done a lot of work on ballast calculators in the past. I have never offered them up for use by TU members because I considered them complicated and clumsy. This one however, I consider to be very slick and versatile. You can enter data from a first prototype and it will calculate how much ballast you need to add or subtract to achieve the buoyancy that you desire, be it slow sink, neutral or float. Boxes 1 and 2 are merely to collect data on the body material in order to obtain the material density. Boxes 3 and 4 are measured from a completed lure with hardware, hooks and topcoat. Box 5 is your desired buoyancy, 100% = neutral buoyancy. Box 6 is the density of the ballast. This can be changed if not using lead. The calculation takes into account the body material removed or added to make room for the ballast. PM your email to me if you would like to try this spreadsheet. Dave

A difference of a few degrees will allow the hotter one to flow ahead of the cooler one. difference in thickness affects it also. Good luck.

I have been making a ton of skirts in variances of these 4 colors. These rock my face off... In this order top to bottom. 1 tab, 1 tab, 6 strands, 2-3 strands... https://fishingskirts.com/product/gr...-blue-420-535/ https://fishingskirts.com/product/wa...immer-523-905/ https://fishingskirts.com/product/gl...-shad-404-461/ https://fishingskirts.com/product/ba...-988-989-1912/

Oh yes you can do some nice effects for plastics for sure. I've made laminates in tubes, brush hogs, super hogs, beavers, flukes, worms, senkos, ned rig baits, swimbaits , craws & jig trailers etc. & they work & look great. That's why the thought occured to me to possibly try it.

I've found a really flat bottom face, a slow fall, and ballast rising above the mid point of the lure (a line from the line tie to the rear hook hangers) were the keys for getting my spybaits to wobble on the slow fall.

I also make a sinking lure with Dave&Mark theory. The size of lure was 1.1cm(H) x 7cm (L), thickness is 0.5cm only, all side of lure is flat. Total ballast is 1gr 1. If i put all 1gr/1.3gr to the bottom-->no wobbling 2. 0.4 gr on bottom an rising 0.6gr up --> litte wobbling 3. 0.6 gr on bottom and 0.4gr up--> good woobling but just start wobbling after 2-3 secons (see in below video) I think that : a, the thickness of lure also effected to wooble action. b, if the ballast weight too heavy or to light also make lure stop wobbling Note: i hope that every one can understand my crazy English. lol

It's quite easy to do it What for I can use density data then?