Machined pengun - Dimply

[velocity3x]

Nice work, Jack. You should be very pleased with your new found skill.

[jackssmirkingrevenge]

Nice work, Jack. You should be very pleased with your new found skill.

Thanks I wouldn't call it a skill yet, but i'm definitely pleased with my new tools

[LeMaudit]

I didn't leave a round edge but it shouldn't compromise sealing *crosses appendages*

Well done!
I too had a regret about that... would have been better to leave the edge... oh well...

if you want to do the dimples on your pengun, I will prepare today the last step.

It will involve an additional fixture made on the lathe because I need some extra precision if we hope to have perfectly identical dimples. A little difference in depth will be a big difference in diameter.

I will not film the making of this fixture, but I am preparing right now a cutting plan that describe it. So you can be 100% on your own for this one!

[edit] Oh... damnit... I remember now you don't have a round end mill to do them
So you will need to use a flat one, and in that case you don't have really diameter change problems But I'll prepare the plan anyway.

[jackssmirkingrevenge]

Well done!

Cheers!

I too had a regret about that... would have been better to leave the edge... oh well...

I don't think it should be a problem... if not, redo the part

It will involve an additional fixture made on the lathe because I need some extra precision if we hope to have perfectly identical dimples. A little difference in depth will be a big difference in diameter.

Am I good with the two flute end mill or are you going to use the ball mill?

I will not film the making of this fixture, but I am preparing right now a cutting plan that describe it. So you can be 100% on your own for this one!

Not as nervous as I would have been two weeks ago

[LeMaudit]

Step11A: a little centering fixture I made. It was a bad idea to rely on thread attachment to keep everything centered... one learn form his mistakes

This doesn't deserve a video, it took me more time to draw the plan than to cut the brass. But here's a few photographs and the cutting plan I followed.











Now the aluminum cap and the lower part of the body don't have a visible wobble while turning, which is good enough (I hope).

Now Let's cut those darn dimples... I have no choice now.. except rename the thread title maybe... hmmm... argh! And all the video titles!
Nah, let's cut them

[warhead052]

Have fun with the dimples! Can't wait to see this pengun completed, even though JSR already test fired his >.>

[jackssmirkingrevenge]

I might not be able to work that way but I can appreciate the setup.

You know, you can glue the barrel and let it cure while you cut the dimples

[LeMaudit]

[jackssmirkingrevenge]

... that and glue the schrader, you should be able to test it before the day is through!

[LeMaudit]

La la la la....

I'm not even sure I have the o-rings... I'll have to go and buy some tomorrow... that and some marine epoxy

[Fnord]

Did either of you ever consider buying a big o-ring set? If you can't find one on ebay I'm sure one of us could ship you some (unspecified) quality harbor freight o-rings.

Ok, they're actually decent quality. I bought a 400 piece metric set for $15 and haven't found any defective ones.

[jackssmirkingrevenge]

that and some marine epoxy

You don't have it yet?!

*gasp*

Coincidentally I bought these this morning doesn't include the AS568-109 size I need for the pen gun though so I bought 50 of them separately.

[LeMaudit]

quality harbor freight o-rings.

They are on sale right now at $7,99.... but damn, they don't ship to Canada

[saefroch]

So would anyone like to explain to me why JSR suggests marine epoxy?

[ramses]

So would anyone like to explain to me why JSR suggests marine epoxy?

Because He's on a boat.


Seriously, It is less viscus, and therefor flows better than the usual 5 minute stuff. It's probably stronger as well.