I electroform a shaped charge copper cone onto a lead former and show various ways to cast the lead former and the setup and running of the plating bath.
you do not need to heat the lead out. immerse the lead cone in a 10 percent solution of potassium dichromate solution for 30-60 seconds. this forms a passivated layer on the lead only microns thick, but still electrically conductive. electroformed parts will pop right off after plating.
now a days one just 3d prints a cone and spray it with conductive graphite paint, or just print cones with 80% copper powder filament. times change, remember when i was hot hammering alu dies and copper plates.
that system and result looks pretty good. Ages ago when i first was experimenting with making cones i did try lead casting but could never get a symmetrical form. but then i was using circular sections of drink cans to make cone shapes with. the ones you made here look pretty neat. 0.29mm is a bit thin for my preference but they'd still work fine although to press anything on top of them you really need to fill the cavity to not collapse it. Have you tested them? Also did you see any difference in heating the plating bath vs cold?
AllChemystery Thanks , they are very thin as i read some literature that said to keep the cone thickness between 0.01 to 0.06 x the cone diameter , the filling would have to be a cast one as a result in smaller diameters . I like the bath to be warm its just a preference same as stirring the solution .
Interesting, here is a potentially easier way: make a wax form, coat that in conductive paint, electroplate, reverse current for a short time to electropolish, remove wax with heat. Much cheaper and less time consuming than lead, no finishing steps. No health risks.
@sad faggot Well, more copper just means more mass, higher density means same mass in smaller package. Same end, different means. But yes, copper's plentiful and relatively cheap, so it gets used.
he make an copper cone for chaped charge. He will put this cone in a cylinder of steel or very strong material (also dense). You press in PETN or the like, PETN is a good choice if you work with small cones as he does. OTherwise you go for RDX or octogen or some exotic. The cone bottom must have the right distance to the material that he wants to blow a hole through. If you use a more flat cone you can use it fo hit things at distance. Its more of a weapon in that case. To play with this things are not okey says our criminal goverments (runned by the banks).
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good job!
you might try using a graphite blank to plate copper on to. it would release easy
How about some pictures of the charges? and some detonations?
you do not need to heat the lead out. immerse the lead cone in a 10 percent solution of potassium dichromate solution for 30-60 seconds. this forms a passivated layer on the lead only microns thick, but still electrically conductive. electroformed parts will pop right off after plating.
I wonder if you can spin sheet copper into a cone like that on the lathe.
single point forming will work but it work hardens so needs often heating and the cone becomes too thin at the tip where you really want it thicker
now a days one just 3d prints a cone and spray it with conductive graphite paint, or just print cones with 80% copper powder filament. times change, remember when i was hot hammering alu dies and copper plates.
that system and result looks pretty good. Ages ago when i first was experimenting with making cones i did try lead casting but could never get a symmetrical form. but then i was using circular sections of drink cans to make cone shapes with. the ones you made here look pretty neat. 0.29mm is a bit thin for my preference but they'd still work fine although to press anything on top of them you really need to fill the cavity to not collapse it. Have you tested them? Also did you see any difference in heating the plating bath vs cold?
AllChemystery Thanks , they are very thin as i read some literature that said to keep the cone thickness between 0.01 to 0.06 x the cone diameter , the filling would have to be a cast one as a result in smaller diameters .
I like the bath to be warm its just a preference same as stirring the solution .
plating bath would be optimum around 64-65 degrees celcius, with some thiourea and gelatin (around 3-4 mg/L)
Wow yeah that's quite a deposit holy crap That's fucking great man I love it
Nice done.verry smart thinking how te somplify perfection.its greath.. master mind in action!!
Edy Smetsers Thanks.
Do you have any pictures of what it does to a steel plate?
That's badass man
Interesting, here is a potentially easier way: make a wax form, coat that in conductive paint, electroplate, reverse current for a short time to electropolish, remove wax with heat. Much cheaper and less time consuming than lead, no finishing steps. No health risks.
If you make a video of that, I'll watch it!
you mean 3dprint
Musta had the current a tad too high hence the spikey things.
ElGatoLoco698 probably was a bit high but it still cleans up ok
👅
*dendrites
Do you have any videos of you using these in some shaped charges? I don't see any
I've always been curious as to the strength
Wouldn't rubber bands work better than duct tape for the plaster form?
Is it necessary to polish the cone?
nice :)
why is copper the metal widely used in sc's? can alternative metals be used?
ductility. ya there are better. namely tantalum
I believe the density is also a factor. IIRC more mass makes for more punch.
@sad faggot Well, more copper just means more mass, higher density means same mass in smaller package. Same end, different means. But yes, copper's plentiful and relatively cheap, so it gets used.
I have watched this vid but still I have no idea what you were doing?
he make an copper cone for chaped charge. He will put this cone in a cylinder of steel or very strong material (also dense). You press in PETN or the like, PETN is a good choice if you work with small cones as he does. OTherwise you go for RDX or octogen or some exotic. The cone bottom must have the right distance to the material that he wants to blow a hole through. If you use a more flat cone you can use it fo hit things at distance. Its more of a weapon in that case. To play with this things are not okey says our criminal goverments (runned by the banks).
@@zekeriasvarg530 (((banks)))