Shop Made Tools

[Nick Carter]

I don't want to sound like the safety police but I ran this by my neighbor who does fuel injection testing for a living and he said:
"Oh my God. That is a bomb. A quart of gas @ 110 PSI is like 2 sticks of dynamite. And the vapor/mist from the injector means a spark within 10' would light it off."
He's not given to hyperbole, so I would probably take the advice of others and use a different liquid. You can do mathematical correction for the results from different liquids.

Thanks for the tip. We will give it a try next time. Last time we tested the injectors it was below 0. So we had my shop door closed. That lasted about 20min and it got really bad. We ended up pushing my rolling bench outside and finishing off.

[zerodegreec]

actually we use Nitrogen to pressurize the tank. I don't know why I put air but we don't.

[H380]

Just finished this.

Made from a 1 1/4" x 14" bar of cold rolled.

[Lew Hartswick]

Very nice knurling job on that handle.
...lew...

[PeteF]

Made from a 1 1/4" x 14" bar of cold rolled.

Nice! The end of the handle looks like it is a separate piece, is the handle hollow with a threaded cap so you can keep a punch or something similar in it?

Pete

[H380]

Thanks. I decided it was time to learn machine work. So I am taking classes at the local VoTech. The hammer was the last project in the basic lathe class.

Yep the handle is drilled and internal cut threaded 7/8 14. I need to scrounge up some brass to make a spacer between the cap and handle.

The handle is hollow so I would cuss when trying to cut threads with a self ground HSS tool in a self made 1/2" bar in a 7/8" hole.

[GKman]

If you wanted you could send me your nozzles and I would flow them on my fuel flow bench for a nominal charge. PPH or GPH you pick.

I'd want Gasoline Per Hour. No Pee Pee for me.

[biometrics]

Really Nice! How is the handle attached to the head? Press fit?

[steverice]

I'd want Gasoline Per Hour. No Pee Pee for me.

my bad, typo - should be

pph: pounds per hour

gpm: gallons per minute

[H380]

Really Nice! How is the handle attached to the head? Press fit?

It is threaded. I turned the head in a lathe. Then put it in an indexer on a mill. Milled the flats on the head. Locked the X and Y. Used the quill and a 3/4" end mill to cut the counter bore. Put in a drill chuck and center drilled, pilot and tap drilled. Then put the mill in neutral power off and put a tapered tap in the drill chuck. Start the tap in the hole by turning the chuck by hand and/or a strap wrench. Once the tap is started straight loosen the chuck and leave the tap in the hole. Turn away with a tap wrench. Then go to a plug tap and finish with a bottoming tap.

[steverice]

I would just chucked it up in the vice and ran it in till the tap quit turning...but I am a hack.

[dothacker]

Cross drilling fixture with replaceable drill bushings to handle rods feom 1/4" to 2-1/2" diameter:

I had been contemplating a way to drill a hole in the center of a pipe and had a similar idea, but this inspired me to put it into action. There is hardly a need for the word "precision" in here, but for what it is, it works. If I'd have had more time and stock, I'd have made some bushings for various sized drills.



In case you're wondering why it's off center, I haven't decided how deep I wanted the vee, so there is room to expand on the other side. As it is, it holds nothing smaller than 1/2". The vee is 90 degrees and I only ground the top and bottom because the sides are likely to be dinged up by vise jaws or something. The counterbored holes are for screwing directly into my worktable. They are clearance for 1/4-20 sockethead capscrews. One is a bit larger than the rest because I found a smaller endmill after the first was sunk. Oops haha.

[strokersix]

H380, With apologies, the threaded connection will be less likely to come loose if you undercut the threaded portion right next to the shoulder. This will allow a little bit of stretch in the undercut portion and improve the connection. Alternatively you can drill out the first couple threads in the head to achieve the same purpose.

[H380]

H380, With apologies, the threaded connection will be less likely to come loose if you undercut the threaded portion right next to the shoulder. This will allow a little bit of stretch in the undercut portion and improve the connection. Alternatively you can drill out the first couple threads in the head to achieve the same purpose.

It is just for show. I had to make it +-.002 from a print for class. It is really soft cold rolled. We have some shop hammers with the same handle but 1 1/4" Brass bar heads. They just have a roll pin completely through the head and thread.

[dothacker]

It is just for show. I had to make it +-.002 from a print for class. It is really soft cold rolled. We have some shop hammers with the same handle but 1 1/4" Brass bar heads. They just have a roll pin completely through the head and thread.

Nothing's ever "just for show"; it just means you need to use it on softer material or find another use for it. :P I made one not so fancy as that to pound on sheet metal. Hasn't even scuffed the surface of the soft, polished, cold rolled I used.