SpudFiles

i am face with the the challenge of making a hammer roughly 17 mm circumference without a lathe... what do you guys suggest?

by the way how heavy should it be its hiting a blowgun valve stem

Edited and merged by jrrdw.

As in a gun hammer?

yeah lol , not an actual hammer already got 2 of them ha

buy some 17mm steel round bar?

already got 2 of them

Geez, I have probably 15.

Basically you want to look at this thread.

His diagram shows how his hammer valve works, and would be easy to duplicate.

what do you do with 15 hammer lol a bit excessive

and i know how it works , i just need to make the hammer i already have a button/poppet valve (whichever you prefer to call it) made .

Each hammer has a purpose, from my various sized ball peen hammers, to my carving hammer, dead blow mallet, and various claw hammers.

Well you could probably make a weighted hammer from washers and nuts on threaded rod. This would make it easily align with your hammer spring. I only included the diagram to get some ideas flowing.

I have an 8 oz. peening hammer and a 16 lb. sledge. I figure if one doesn't work the other one will.

As to the hammer, plain steel stock 17mm in diameter is the simplest solution. Denser materials could be used but things like lead will deform against the harder valve pin.

if i were to melt enough silver solder into a tube and let it dry to make a cylinderr would it be strong , and heavy enough to be used as a hammer?

I highly suspect it would deform when striking your valve pin/actuator.

Why not simply epoxy a bolt in that same tube running lengthwise?

Need more mass....use a larger (diameter) bolt.

What are you building?

Fiber glass past, when it's ready it has enough mass and strength, but it would be better if you glue a metal plate on the surface of the bolt that hits the pin.

so an epoxied bolt should be enough? how much should it weigh and does that even matter?

@Gippeto
its a hammer for hitting a hammer valve

The weight matters, but we need to know the specs of you valve; pressure, seat diameter etc.

With the "right" spring, a piece of steel 3/4" diameter and 1 1/4" in length will be more than enough to open a valve with a sealing diameter of .27" @ 2000psi.

Use a 3/8" bolt and call it good. Striker travel should be ~ 1 1/2" depending on the spring.

Cheap to change later to get more power or more shots/fill.