Tubing notchers?

Does anyone have any plans for making one of these? I understand i would need some sort of v block to locate the tubing but i want to find some plans for the bearing assembly.

[edwardd_]

Is this the style?



photo from :

http://www.lowbucktools.com/notcher.html

If not, what type? Photo helps.

HTH

this style of notcher.

I know i could machine the tubing clamps and get the mounting plates laser cut. But my issue is what type of bearing i should use. I need one that can take the abuse of being mounted to a drill and cutting metal and can withstand all the abuse from the vibrations.



i was thinking about these bearings and using like 3 of them vertically aligned but i need to research them.

[tbody321]

I have the Ole Jigger tubing jig and it works great. Harbor frieght makes
a copy cat that works just as good. For bearings you should be able to use bronze bushings that have a should on one end. I have seen these in local hardware stores.

[PaulG]

Low_sst

You might want to save yourself alot of aggravation and just use a chop saw or band saw. Notching tubing with a hole saw is at best a slow and unpleasant experience.

[Boogiemanz1]

I don't know Paul, that is the only way I do it on smaller tubing. I have used a joint jigger, and with a quality holesaw it works well. When I jig tubing up in my mill, holesaws work very well. I only use end mills if I have small tube and weird angles.....john

[tbody321]

MCS sells good quality hole saw kits. I just purchased a kit for about 70 dollars and they seem to work very well. Spend the extra dollar to get good quality tools

[Ernie Ferrucci]

I'll agree with John (Boogiemanz1) on this. There was more discussion about this on a recent thread: http://www.metalmeet.com/forum/showt...t=tube+notcher. And if you type "tube notcher" in the search there are other threads.

[PaulG]

John,

If it works for you great.

But next time you get a few minutes, try it the other way and see how much time you save. I think you'll put those hole saw away like I did.

[weldoneinc]

Got to agree with paul . I worked in a race car shop in the 90's before hole saw joint jiggers and mittler tube notchers that use a roughing mill . We had a Williams low buck notcher that was great for 90 deg. notches but for angles you cant beat a band saw and grinder . If you where ever showed how to notch with a grinder it is very fast , I am talking 1-3/4" or 1-1/2" round tube . Small tube like 1-1/4" and smaller a milling machine works great . Like sprint car and funny cars and rails they use mills but they also tig weld and you need a tight fit , if you mig it is better to have a little slop like a 1/16" or the end of the tube beveled good this way you get good penitration . Hole saws work good but they are slow and you cant do high angles with them like a door cross bar. Milling machines are slow on high angles. I am working on a MGB-GT V8 roll cage right now and i will post some pics in my gallery.
James