Hybrid ThorJack

[Petitlu]

Ok for the mold!
Why cut off your head?
it can be overtaken from the mold.
Note, this is often the head that stops the penetration of the nail ...

[Goats spudz]

Why cut off your head?

What?

[Petitlu]

Why cut the nail head?

[ramses]

How long are those fins!? It looks like you would need a very long, thin endmill to do that.

I think you might need to cut off the head to have access to put the nail into the mold.

If he counter-bored the fin end a little, (and the fins are large enough) you, the epoxy could completely surround the head.

I would suggest leaving the head on and making the fins big enough that you could use the head to index the nail into the mold, so it does not fall out during curing. Although, you could just make the mold the right length and use the tip for that. The fins (and head) might impede penetration.

[Petitlu]

nails I shot like this in:



Stope head penetration :

[jackssmirkingrevenge]

Why cut the nail head?

... because it stops full penetration also, it shifts the centre of gravity forward meaning the fins don't have to be so long.

How long are those fins!? It looks like you would need a very long, thin endmill to do that.

I calculate 1cm or so, which should be easy to achieve with a 1/8" end mill.

[Petitlu]

I hope the demoulding will not be too difficult

[ramses]

Why cut the nail head?

... because it stops full penetration also, it shifts the centre of gravity forward meaning the fins don't have to be so long.

How long are those fins!? It looks like you would need a very long, thin endmill to do that.

I calculate 1cm or so, which should be easy to achieve with a 1/8" end mill.

my 1/8" end mills are much shorter, but have a 3/8" shank. I also didn't quite appreciate the scale of the mold.

If he will be removing the heads, I would encourage you to make the whole mold just long enough that the nail will bottom out flush with the far end so the fins are consistent. Maybe plan on leaving part of the nail back a little, so the pusher plate pushes on it, rather than the fins so as not to stress them too much.