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My new machining tools.

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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My new machining tools.

Unread postAuthor: psycix » Wed Dec 09, 2009 10:06 am

This just arrived! :D *happiness*
5 DIN 5157 BSP tap sets! (alias "G" or "pipe thread")
BSP is like the european NPT.

I bought the following sizes:
-1/8" (2x, one for BTB)
-1/4"
-3/8"
-1/2"
All other sizes (and outer threads) should be able to be cut on a lathe.

They're a bit greasy, but here's a quick pic:
Image


Poland_spud's project will be the first thing to be threaded with these taps, being the beginning of an endless row of custom spudgun parts.
These things open up a wide range of spudgun machining possibilities.
If you live in Europe and would like a custom part, ask me. I love to help other spudders out.

I can't wait to hop into the machineshop tomorrow... :hello1:
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Unread postAuthor: POLAND_SPUD » Wed Dec 09, 2009 10:42 am

wow they're all nice and shiny...
I wonder if JSR (hint hint!!) will finally ditch epoxy and do things in the proper way from the very beginning :wink:
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Unread postAuthor: ramses » Wed Dec 09, 2009 5:16 pm

nice. are they plug taps for blind holes, or just tapered (standard) for easier starting?
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Unread postAuthor: psycix » Wed Dec 09, 2009 5:22 pm

The ones with the ring are tapered for an easy start, and the other ones are plug taps. You can see it on the 1/2" tap in the bottom.
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Unread postAuthor: daberno123 » Wed Dec 09, 2009 7:16 pm

Very nice. What kind of lathe do you have?
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Unread postAuthor: Mr.Sandman » Wed Dec 09, 2009 7:37 pm

POLAND_SPUD wrote:wow they're all nice and shiny...
I wonder if JSR (hint hint!!) will finally ditch epoxy and do things in the proper way from the very beginning :wink:
Thats like asking if the sun would stop glowing orange and turn black like the most of the universe! :P Damn i wish i lived in europe but alas i will have to settle for virginia. One question though psycix, Is it possible to rifle pipe with those? probably not but i am just wondering. also how much did those beauties cost and where did you order them from?
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Unread postAuthor: maverik94 » Wed Dec 09, 2009 7:39 pm

Hmmm, you don't neccesarily NEED a lathe for tapping holes. I have tapped brass and steel by hand before. It takes FOREVER, but it works. Also, when using this in a lathe, you will need to be squirting oil on the piece almost constantly right? I had to oil my piece that I was tapping, and I was doing it by hand!
Is it possible to rifle pipe with those? probably not but i am just wondering. also how much did those beauties cost and where did you order them from?
Unless you plan to rifle your barrel with a 27:1 rifling rate (there would be SO much friction that I'm bretty sure the bullet wouldn't even be able to leave the barrel), the answer would be no. For rifling, you need something like a 1:8 (Thats 1 full twist of the grooves in 8 inches) rifling, or even higher like 1:20 etc. There are pretty much for threading only. You can get these at any respectable hardware store. Even a discount place like harbor freight has them I'm pretty sure. Also, you will need a special type of oil that needs to be applied every few turns of your tap. I forget its name, something like Tapping oil or something.
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Unread postAuthor: c11man » Wed Dec 09, 2009 8:09 pm

hey looks good. the projects should sweet with these now. i also have lots of taps and dies. i have npt tapes from 1/8 up to 1/2inch, npt dies 1/8 and 1/4. and normal course and fine threads form #6 up to 3/4inch. but of course i have to do it all by hand, but im ok with that
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Unread postAuthor: jook13 » Wed Dec 09, 2009 9:11 pm

I bought this bad mamma jamma a short while ago.

http://www.harborfreight.com/cpi/ctaf/d ... mber=42431

Not the most quality set, but for the price I see no problems using em on pvc, which I will.
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Unread postAuthor: Mr.Sandman » Wed Dec 09, 2009 9:16 pm

jook13 wrote:I bought this bad mamma jamma a short while ago.

http://www.harborfreight.com/cpi/ctaf/d ... mber=42431

Not the most quality set, but for the price I see no problems using em on pvc, which I will.
Well seeing as though they are made of pretty good quality carbon steel they shouldnt have any problems with the easily workable metals ie: brass and zinc. Do you use these in a lathe or drill press or what? I was meaning to buy some of these so i could stop using epoxy so much. I just dont get how to go about using them.
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Unread postAuthor: psycix » Thu Dec 10, 2009 5:30 am

@daberno
I can borrow the mills and lathes in my university's machine shop.
I believe most equipment has brand name "Emco".

@Sandman
I ordered these at a dutch webshop. www.toolworld.nl to be exact.
The total deal (including shipping) was only 47 euros! Very cheap.

No, you can't rifle pipe. A tap has a set pitch (multiple grooves per diameter length), and rifling has a way longer pitch relative to the diameter.

@all
I will use these taps not only with a lathe, but also with a mill.
The taps have a very neat little dimple in the center of the top surface. When I just drilled a hole and the chuck is still exactly above it, I can chuck something pointy, and put the tip of that into the dimple, guaranteeing straight tapping under a perpendicular angle.

@maverik
Yes, when tapping threads you will need to use cutting fluid. The right type of oil used depends on what material you are working with. I'm mostly working with aluminum, as its lightweight and easy to machine.


@JSR
Where are you? Scared of threads?
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Unread postAuthor: inonickname » Thu Dec 10, 2009 5:45 am

Long live BSB threads :) .

I have 1/4" and 1/8" BSB pipe taps, and I'll be buying a 3/8" one when i go to pick up my mill attachment, $200 worth of HSS mill bits and metal. Unfortunately they don't stock a 1/2" pipe tap, so I'll have to look elsewhere.

Quite a nice little set, how much would they set you back?
Nevermind, 47 Euros. Quite fair, I may buy a set similar so I also have the plug tap for cutting threads into short holes.

I'm looking forward to being able to complete my tap set so I can make my custom machined parts completely compatible with off the shelf fittings.
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Unread postAuthor: psycix » Thu Dec 10, 2009 5:54 am

inonickname wrote:Long live BSB threads :)

BSB? Don't you mean BSP?
British Standard Pipe thread


Unless you use it to tap holes for "bipes". :roll:
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Unread postAuthor: inonickname » Thu Dec 10, 2009 6:04 am

psycix wrote:
inonickname wrote:Long live BSB threads :)

BSB? Don't you mean BSP?
British Standard Pipe thread


Unless you use it to tap holes for "bipes". :roll:

I was sure I had seen BSPT on my taps- except that I had a plastic fitting next to me with a sticker "BSB" on it- unrelated to the threads most likely, but I just saw it and didn't give it a second thought.
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Unread postAuthor: Brian the brain » Thu Dec 10, 2009 8:05 am

BSPT is tapered..
BSP is straight.

I should add to the confusion and make my own pipe thread called BTB
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