expanding arbor

[paramedic_hood]

I just purchased a set of expanding arbors.  Has anyone ever tried to use these.  They look very similar to the expanding mandrels I have heard some people talk about.  I picked the set up for around $20 with $6 shipping.  The set came with 4 different sizes 1/4, 3/8, 1/2, 5/8.  I beleive they are used mainly for metal lathes but I don't see why they would not work.  If anyone has tried some expanding arbors let me know how they work. 

[dogcatcher]

There is a screw in the slotted end, to expand turn to the right.  Don't expect to see much movement, these are for metal and they deal in thousandths of an inch.

Marvin

[BigB]

Do you have a pic of them?


are they like this:






or this:





If they are like the bottom, then that is what I use in my collet chuck.  They work just fine.  I don't have any experience with one like in the top picture.

Brian

[paramedic_hood]

Big B they are like the ones in the bottom you posted. 

[Robert A.]

I use the ones on the bottom, I have a 1/2 inch and a 5/8th, on the 5/8th inch i turned the back of the shank down on mt metal lathe to 1/2 so i could use them in my Jacobs chuck. i have not had and trouble with them exept you need have a good precise drill bit. Good luck!

[DEER TAG]

Where can i pick these arbors up ?

[Robert A.]

I beleive i got mine here. http://www.use-enco.com/CGI/INPDFF?PMPAGE=511&PMITEM=240-3198