lesson learned about round head jig molds

[slabslayerking]

ok guys what gives here i have a barbed round headed mold and i bought a new mold just a round head no barb no color in part my thoughts were that the round head without a barb to get the weight correct it would be a bit biger than the one without the barb . but it turns out that its not its the same size hmmmmm why is this by not having any scales to weigh the two i am without knowing witch one is a correct size 1/32 or a correct 1/16 either so my question to you all is who amung us here has the answer im looking for and whats the differance and why are the do-it molds this way i have the minow head molds and the ball head barbed and several others had i known this was this way i would have bought a biger head size mold in this style to match what my customers are already a custom to becouse the barbed color round head is heavyer no doubt than just a plain round head without a barb .


thanks and im looking forword to your responces to figure out my problem

[skeetbum]

Good question. I also don't have a scale to see the difference. I have a minnow head mold that says the small one is a 1/48 with a barbed collar. My thought is that it might have been before they added the collar, but it's more like a 1/32 now. Suits me as that is about as small as I use anyway. I'm sure that the 1/16 is heavier than that, but it's not 1/8 for sure. I'm also interested to see the results of this if someone has a scale to tell the real truth.

[skiptomylu]

I don't have any molds, but I do have some digital scales and every time I weigh jig heads the smaller the more accurate the weight is. So my 1/64 and 1/80 are pretty much on the money, but once you get to even 1/32 they are off and the bigger the more that are off and some a lot. Example I have some 1/32 minnow heads with collar and without collar and the ones with no collar are closer than the ones with collar. The non collar are actually .045 and should be .03125 and the one with a collar are even worse at .055 or getting close to a 1/16 Oz. (.0625).

So lots of people out there think they are fishing with a 1/32 are not actually especially if they have a collar using soft plastics!

This is just one example, but I see it all the time!

Skip

[PA_Slabs]

I think it has to do with the purity of the lead that the heads are poured with.

[JSC]

i think it has to do with the purity of the lead that the heads are poured with.

ditto
jsc

[skiptomylu]

That purity has some to do with it, but more to do with the size of the head and the collar added on as I don't think the mold makers consider that at all. If purity was a big issue then my 1/64 wouldn't hit exactly on 1/64 IMHO! Now I don't pour heads so this just just from what I have seen and use to by my heads from a guy that used pretty darn pure lead and still not right. Also if purity was the issue then they would even be heavier when using just lead, but they are too heavy anyway. All of my heads that are too heave are not pure lead and if they were they would even be more off.


Skip

[PA_Slabs]

That purity has some to do with it, but more to do with the size of the head and the collar added on as I don't think the mold makers consider that at all. If purity was a big issue then my 1/64 wouldn't hit exactly on 1/64 IMHO! Now I don't pour heads so this just just from what I have seen and use to by my heads from a guy that used pretty darn pure lead and still not right. Also if purity was the issue then they would even be heavier when using just lead, but they are too heavy anyway. All of my heads that are too heave are not pure lead and if they were they would even be more off.


Skip

I don't pour either. Here's the thing tho. A lot of guys will pour w better quality/purer lead when making 1/80 and 1/64s b/c it has a lower melting temp allows it to pour easier into the small molds. So that may explain why the smaller sizes are more accurate.


Also, a lot of pourers will modify their molds for the collared jigs. A very small change in the diameter of a sphere has a suprising affect to the volume/mass.

[skiptomylu]

I just think there is less room for error or change in weight when dealing with smaller heads and I know the guy I buy all mine for is not using different lead on the small ones.

Want to know for sure, just ask Paul/Grousefly as he makes a ton of stuff and so many jig heads I don't think he has time to change his lead.

Skip

[M_a_c_k]

Yeah its not lead impurity... Lead is a heavy metal, when it's molten all the impuritys float to the top and you can skim it off... It's such a heavy metal you don't even need any flux to separate the lead from impurity's... When your lead is molten it should look beautifully shiny just like liquid mercury (another heavy metal)... And if it's not use a spoon to skim off any impurity's. Like skimtomylu He's probably right about the company's not being completely accurate on weight with different versions of the same mold, and plus hooks will probably differ a couple thousandths of a degree along with barb and barbless.

[Redman]

Have been reading and mulling this over in my head. I don't or haven't come up with a answer yet. But the only thing that I can think of is A. That it has something to do with the lead or the lead Alloy that they think you are going to pour with. As there is a change in the specific gravity of a lead alloy to pure lead. Or B. Its that Do-It wanted to make a uniform size to the heads whether it be collard or uncollard. Just not sure but does have me thinking. Now where is my digital scale its around here some where.

Redman