Holding small parts on mag chuck

True that, I always follow up on the disc. I forget not everyone has one.
I have heard of sine plates, maybe I’ll try one sometime.
Also when I say faster, I mean for me.
I’m not as comfortable around a machine shop as others.
 
Javand,
If it’s not too much trouble, can you show some pics of the setup you’re talking about?
 
To the OP, I’ve seen guys with weak chucks engage the magnet on small knife parts and then put a drop of super glue and a spritz of insta-set to hold things. Looked like it worked well, when done, pry up the other end and clean with acetone.

Hoss
 
DevinT said:
To the OP, I’ve seen guys with weak chucks engage the magnet on small knife parts and then put a drop of super glue and a spritz of insta-set to hold things. Looked like it worked well, when done, pry up the other end and clean with acetone.

Hoss
Click to expand...


Yep, or use a heat gun/torch for a few seconds to heat the part up and it'll pop right off. If you're working with real thin parts like 1/16" or less, they'll want to warp/bend when you pry them up if not. I use CA glue quite a lot of "assisted" fixturing of hard to hold parts.

Even a fine pole chuck wont hold super thin stainless liners worth a shit, and it can be hard to effectively block also. Use a carbon blocker and run a "bead" of super glue around the outside of the part after you've already engaged the magnet, and it'll lock it down. In this case, the thicker liquid or gel is really useful, since you can get a solid bead instead of getting the ultra thin all over the place, although if you've got something already fixtured and need to get some glue for "extra" security, the thin stuff will typically wick under a thin part if you tap on it while you put the glue at the joint.
 
Josh Rider said:
Javand,
If it’s not too much trouble, can you show some pics of the setup you’re talking about?
Click to expand...


You want a photo of the SG? I can do that, but the chuck I'm using is, the A-10-MS on this page: http://www.subtool.com/st/a-ms_magna-sine_magnetic_compound_sine_plates.html


Now, prepare to puke when you see the "retail" price, but consider I bought one surplus for like, 1/10 of that price or less, combine that with a set of gauge blocks, and you can grind any compound angle you want. Certainly worth the money, but you can find smaller, or non-compound versions for even less used. In fact, I got the bigger one, a 6x6, and a like 3x6 all at the same time, and sold the other two to pay for the big one, cost me nothing but time in the end.
 
BTW: here's a fine pole chinese mag sine chuck for cheap, new: https://www.ebay.com/itm/NEW-4-X7-S...c-Chuck/263548814794?var=&hash=item3d5cbbc5ca

I always tilt mine length ways, but there's no reason you cant just as easily use it tilting this way. If you get the 6x6 you can pretty easily fit the whole tang of a big knife on there comfortably without hanging off any part of the handle.

Here's another, like 5x10; https://www.ebay.com/itm/125-250mm-...973615?hash=item5d7b52aa2f:g:z4cAAOSwZDdamOdg
 
Thanks, yeah I was trying to work it out in my head how the operation works, but I think I can figure it out. You’re leaving the blade hanging off and tilting the table lengthwise I gather.
 
Josh Rider said:
Thanks, yeah I was trying to work it out in my head how the operation works, but I think I can figure it out. You’re leaving the blade hanging off and tilting the table lengthwise I gather.
Click to expand...

I am with mine yes, because it's a 12" long chuck. However it's a compound sine, so it tilts in both directions. Many only tilt in one direction, you can hang it off the other way though no prob. The only thing that needs to be on the table, is the area being ground. You don't want to be grinding anything hanging off however, as it will at the very least, be very inaccurate, but can cause all sorts of vibration and chaos in extreme circumstances.
 
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