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by Gippeto
Sat Mar 09, 2024 7:43 pm
Forum: Hybrid Cannons
Topic: UPGBH10x
Replies: 89
Views: 34560

Re: UPGBH10x

X2 Almost 200 posts and not a single useful one that I've seen. Maybe I'm just gettin old and cranky at this point lol. Your continuous and immensely annoying thread necromancy serves no purpose beyond increasing your post count, and making forum utterly unusable for anyone interested in actualy dis...
by Gippeto
Sat Dec 23, 2023 11:22 am
Forum: Pneumatic Cannons
Topic: High pressure 50cal rifle
Replies: 6
Views: 5113

Re: High pressure 50cal rifle

Impressive project and commitment to it. :) If you want to purchase a barrel, you might try Mike at Tj's. Mike makes a lot of the barrels used in big bore air rifles and has some more "air powered" specific rifling rates as well. These are hammer forged liners of very good quality. Mike can be reach...
by Gippeto
Wed Mar 08, 2023 11:50 pm
Forum: Pneumatic Cannons
Topic: Hammer valve-->Piston
Replies: 9
Views: 9527

Re: Hammer valve-->Piston

Nice lathe. 8-)

Porta power gets my vote...oil is easier to clean up than grease. Testing a pcp reservoir.

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by Gippeto
Tue Dec 27, 2022 9:52 pm
Forum: Off-Topic Hobbies
Topic: Merry Christmas
Replies: 3
Views: 8319

Re: Merry Christmas

Merry Christmas. 8-)

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by Gippeto
Wed Nov 03, 2021 2:05 pm
Forum: Ammo & Parts
Topic: Source for Thin wall 1.5" pipe
Replies: 5
Views: 8374

Re: Source for Thin wall 1.5" pipe

Could check with Aircraft Spruce and Specialty for tubing....overkill for the application, but available in a pretty wide variety of diameters and wall sizes and they'll do small quantities.
by Gippeto
Sun Sep 12, 2021 11:37 pm
Forum: Ammo & Parts
Topic: barrel thoughts
Replies: 7
Views: 10640

Re: barrel thoughts

Ever considered ECM rifling? I believe the FGC-9 and it's ecm'd barrel have been shared here before; https://youtu.be/AyPJ2br5NFQ Smith and Wesson has been using ECM to rifle barrels for a while now....a quick look at the commercial version of the process; https://youtu.be/CylcaXYNzcg Looks a bit ov...
by Gippeto
Fri Jan 01, 2021 12:49 pm
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 71
Views: 97185

Re: JSR's workshop chronicles

Nice work Jack. :)

As far as useful skills go, threading is right up there with grinding tools...opens options and doors to all kinds of new projects!

Al
by Gippeto
Wed Dec 30, 2020 10:10 am
Forum: General How-To & Discussion
Topic: stainless steel tube burst pressure
Replies: 24
Views: 23995

Re: stainless steel tube burst pressure

Different strokes I guess. Moonbog; The theoretical fail point and "weakest link" are reasonably easy to calculate before construction. I do hydrotest "unique" assemblies, and in some cases will go beyond 5/3 MWP, but do not test to destruction, never saw the need on something where I am the one "us...
by Gippeto
Tue Dec 29, 2020 3:24 pm
Forum: General How-To & Discussion
Topic: stainless steel tube burst pressure
Replies: 24
Views: 23995

Re: stainless steel tube burst pressure

It was meant as something of a joke...I do not understand Romanian.

Good luck, play safe. :)

Al
by Gippeto
Tue Dec 29, 2020 2:01 pm
Forum: General How-To & Discussion
Topic: stainless steel tube burst pressure
Replies: 24
Views: 23995

Re: stainless steel tube burst pressure

Your English is MUCH better than my Romanian, so no worries...you express yourself just fine. There is not much to be gained by examining the welded ends, far too many variables. Are you familiar with F=P*A ? The weld holding your end plug is holding approximately 1719lbs of force (781Kg) at 1000Psi...
by Gippeto
Tue Dec 29, 2020 12:20 pm
Forum: General How-To & Discussion
Topic: stainless steel tube burst pressure
Replies: 24
Views: 23995

Re: stainless steel tube burst pressure

I realize that there may be some issues obtaining "preferred" materials in some countries. Can you show and give details of "how" you plugged each end of the tube?

Al
by Gippeto
Mon Dec 28, 2020 10:27 pm
Forum: General How-To & Discussion
Topic: stainless steel tube burst pressure
Replies: 24
Views: 23995

Re: stainless steel tube burst pressure

Mr Foo hit on the major point...the ends are where most failures occur first, and it can be pretty dramatic...even deadly. Wasn't too long ago that a fellow was working on a modified Benjamin Discovery and had the valve blow nearly through his thigh...barely missing the femoral artery. Another fello...
by Gippeto
Tue Mar 17, 2020 9:37 am
Forum: Off-Topic Hobbies
Topic: Waste oil burner
Replies: 17
Views: 20616

Re: Waste oil burner

The former of course lol.

Was an enjoyable show in it's day..chock full of "manly manliness", "moar power" and tool girl hotness...Debby Dunning had it going on, Pam Anderson wasn't too bad either. ;)
by Gippeto
Mon Mar 16, 2020 9:01 pm
Forum: Off-Topic Hobbies
Topic: Waste oil burner
Replies: 17
Views: 20616

Re: Waste oil burner

It IS kind of fun...playing with fire and molten metal is somewhat...primal. 8-) Would do a "Tim Taylor" quote here, but you're all likely too young to remember and grasp the humor lol.

Have been casting aluminum for a while now...very useful.
by Gippeto
Fri Mar 13, 2020 2:43 pm
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 71
Views: 97185

Re: JSR's workshop chronicles

I think the biggest issue is loosing some travel with the tail stock. It's a bit tight to adjust the cross slide gibs as well.

https://warcoblog.com/2016/10/05/how-to-fit-dro-lathe/

https://www.model-engineer.co.uk/forums ... p?th=87648