Gallery, Projects and General > Project Logs
mini ball turner.....
Brass_Machine:
Hey Paul,
Welcome to the group!
Ralph will have to answer more on your question, but from what I have seen it is very possible. I have seen people make propeller nose cones with these things.
Eric
Divided he ad:
Hi Paul,
I've made a little ogive in the past.... Still have no use for it!! But I was kinda challenged so I made it!
I don't know what the largest obtainable ogive would be (never tried) but I know the principle of turning one with one of these tools.... Look here :
http://madmodder.net/index.php?topic=282.0
Hopefully you will find something of use in there.
I can talk you through the set up I used easily enough. Not too sure about all your other questions... Never thought of trying to be honest!
What do you make or have you made Paul? Do you have any pictures to show the forum?
Ralph.
bluzboy:
Thanks, Eric and Ralph...
I am a total nube to machining ... I'm just doing research right now, preparatory to getting gear - just what I need - yet another hobby - but I have been interested in this for years. I started buying accessories for lathe and mill - so that is a guarantee that I will be getting the machines soon enuf. I have my eyes on a Sieg C4 right now. And for a milling machine, probably a Super X3. The big constraint right now is space to dedicate to new tools, so I'm pretty much limited to benchtop gear. My initial tie-in to other hobbies is rocketry, hence my interest in turning the ogive nose cones. I'm also interesting in turning some nozzles - not really functional nozzles, but the kind that are used for motor retention and 'effect'.... My elderly uncle has a shop out behind his house with some old, old, gear in it, so I'll have something to share with him - he enjoys making brass steam engines. His shop is set up with old belt-driven machinery - common power drive for several tools, like the old machine shops. I'll keep you posted on my progress on getting going - it will probably be a couple of months before I'm really underway. Some really cool ideas in this forum - like getting metal from the scrap yards. Piston crowns!!! no kidding!!!
Professionally, I am a software designer/developer, so I can easily see this heading towards CNC, if the hook really gets set in me.... ;-)
Thanks again for the welcome...
Paul
Divided he ad:
Ok..... So I finally got my rear into gear and finished this little puppy..... Yes that was 'finished'!! :thumbup:
I'll let the pic's do most of the talking ;D
Sorry about the slight blur!!!
The reason for the not as pleasing look of two holes and covers in the places they are... Well I didn't want swarf falling down into the rotating area as it probably would if the holes were under the tool post (one would often get exposed when cutting a larger convex or mid size concave patterns.) of course that could be remidied in a few different ways.... This was mine.
Just to note what tonight entailed....
I finished the tool post to the level of the turret.
Took a file and removed most of the tool marks, and used emery wrapped around the file for a fine finish.
I then marked the tool tip edge onto the tool post (scribed line visible just in front of the tip in the downward shot) I used a square to find the piont directly inline with the tip and then used the square to scribe a line across the tool post.
The turret was next for marking. The centre was found and marked and then using the square against the grubscrew relief shelf I scribed a line on both sides of centre.
The lines on the tool post and turret are used for the set up of the radius of the ball that is to be turned.
Measure the dia' of the bar being used as a blank, halve it and make the distance between the lines that result. The tool is then set for the radius it is to turn.... Giving a ball of the dia' double that of the tool setting.
Then I thought I'd make it shine a little 8)
Now just to contact the new owner for the address etc and the job is all over!!!
Oh, And obviously I'm going to throw in a tapped slug of brass bar.... Everyone has to make the first ball to be the handle :thumbup:
Next.... I can get some serious me/fun time in .... Wind ball here I come!!! :dremel:
Ralph.
Brass_Machine:
Nice job Ralph!
Polished even :clap:
Eric
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