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Old 04-23-2020, 08:30 PM
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Default Yet Another Gas Spud Build

A while back I made a set of gas spuds for 2 large boilers, I was told they needed to be 3/8" x 4-1/2" stainless steel gas spuds with (10) 3/16" orifices. Welp either my measuring equipment is on a different standard, than theirs or they made a serious error, they actually need to be 1/2" x 3-1/4" stainless steel gas spuds with (10) 3/16" orifices.


1 - start with 1/2" x 5", 304 grade stainless steel nipples
2 - cutting them to 3-3/8" long
3 - the left overs
4 - the raw stock for the 35 needed gas spuds
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Old 04-23-2020, 08:37 PM
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5 - power tappig the raw spuds for the 3/8" npt stainless steel plug to seal the end, on the Jet Lathe
6 - another view of the power tapping process
7 - the orifice drilling set up
8 - the drilled gas spuds
9 - the results


for some God forsaken reason the last 3 pictures are rotated 90 degrees to the left.
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Last edited by GWIZ; 04-23-2020 at 11:37 PM. Reason: Rot pic
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Old 04-23-2020, 08:38 PM
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the spuds now need to be cut to their finish length and buffed up a tad
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Old 04-24-2020, 06:08 AM
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Ohh where are the safety nazis? My old shop teacher would have a heart attack to see the chuck key in that drill chuck on the lathe.

Do you have to clean any burrs up on the inside of the pipe so it does not create any wierd air vortexes?



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Old 04-24-2020, 07:02 AM
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"This Spud's For You ".....
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Old 04-24-2020, 07:17 AM
Lew Hartswick Lew Hartswick is offline
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Quote:
Originally Posted by toprecycler View Post
Ohh where are the safety nazis? My old shop teacher would have a heart attack to see the chuck key in that drill chuck on the lathe.
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Even though it's on the tail stock, I think it's not a good idea to do it also. It may lead to "forgetting" when it's on the spindle end of things . :-)
...lew...
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Old 04-24-2020, 07:39 AM
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Maybe an issue, maybe not, I grew up in a shop where it’s was always left in the drill chuck, I’ve been doing it personally for 50+ years without an issue, no one else uses the equipment. I’ll have give it a think.
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Old 04-24-2020, 07:58 AM
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Quote:
Originally Posted by toprecycler View Post

Do you have to clean any burrs up on the inside of the pipe so it does not create any wierd air vortexes?



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Yep, ran a reamer through the spud to clean the swarf/burrs out, we want the gas flow to be as smooth as possible
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Old 04-24-2020, 09:32 AM
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Quote:
Originally Posted by platypus20 View Post
Maybe an issue, maybe not, I grew up in a shop where it’s was always left in the drill chuck, I’ve been doing it personally for 50+ years without an issue, no one else uses the equipment. I’ll have give it a think.
It's not like the lathe chuck.

Keeping it in the drill chuck if anything (when you advance it close to the work/chuck) the key would get moved out.

But not nearly as violently.
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Old 04-24-2020, 09:52 AM
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Did I recall seeing the on last write up on these, you just welded the end shut ?

On the tapped one for a plug, how to fix them in there ?

Prick punch around the outside ?
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