Nova G3 info

[mickey cassiba]

Anybody here have info on the pitch of the grub screw for the G3. I noticed as I was turning the little pot, that when made an 'emergency' stop, the chuck continued to turn. When I investigated, I saw that there was no grub screw. I've lost it or??? The manual states that it is a 6mmX6mm shss, but no pitch given. I'd rather not carry the chuck to the hardware store with me.
Any info?
Mickey

[David Reed]

Sorry, no metric thread gauge, so don't know if this will help, but mine is dangerously close to 27 tpi.

[Jerry Marcantel]

Mickey, I just ran one of my set screws through a 1/4-28 die. Some resistance, but it still went through. I reinstalled the set screw into the chuck, and it was good..... You might get away with 1/4 28 set screws if you can't find the metric equivalent.......Jerry (in Tucson).

[James Ley]

Just looked at a metric thread chart, all it lists for 6 mm is a M6 x 1 pitch. http://www.carbidedepot.com/formulas-tap-metric.htm

[mickey cassiba]

Hmm, mine lists a 1.0t/mm(coarse) and .75t/mm(fine).http://www.engineeringtoolbox.com/metric-threads-d_777.html Unfortunately my thread gage will not fit into a 6mm hole(what were they thinking?). I have a note to teknatool help desk, but I've a feeling they will try to sell me one, rather than volunteer 'proprietary details'. We'll see...

[Jim Sebring]

The Nova grub screws are the same size (6 mm) and pitch as the jaw screws. I've found them in the little drawers in the local hardware stores where all the other metric nuts and bolts are kept. If you don't want to take the whole chuck to the store with you, why not just take the insert? One of the jaw screws would also work as a size reference.

[mickey cassiba]

The Nova grub screws are the same size (6 mm) and pitch as the jaw screws. I've found them in the little drawers in the local hardware stores where all the other metric nuts and bolts are kept. If you don't want to take the whole chuck to the store with you, why not just take the insert? One of the jaw screws would also work as a size reference.Ahh cool...the jaw screw I can fit my thread gage on.
Thanks Jim!!!

[mickey cassiba]

Ran out this morning and picked up the screw(got a couple. just in case, ya know?) When I got home I found this in my inbox:


Dear Mickey,

Sorry to hear you were missing the set screw. The Picth is 1.0 Were you also missing the fibre wad???
Let me know I can send you the items free of charge if you send me your address.

That is customer service done right. Not only did he provide the info I requested, but offered to replace the parts with no quibble.
I declined the offer, as the price of the screw was $.67, and the shipping for a replacement would have been 10 times that, not to mention packaging, etc.
Too many times, we like to unload on bad service, but acknowledgement of good service is all to rare.
Just sayin'...

[Gary Max]

That's why we buy Nova chucks------------the older I get ,the more I want good service.

[Keith E Byrd]

I am going to show my ignorance - when you say "grub screw" do you mean the set screw that fits in the base of the chuck? My woodriver and nova chucks came with them but I never used them - still in the drawer. I haven't had any problems with the chuck coming loose though. Also have the fiber wads but didn't know what to do with them! Should I change my practices?

[mickey cassiba]

That's what I mean, the set screw. I had to make an emergency stop the other day, lathe stopped, chuck didn't. Ran the work into the toolrest. Then it stopped. And if I am looking at the part list right, the wad protects the adapter threads from the grub screw. Don't know about your practices, but I'm installing the screw, just in case. Might have to slam on the brakes again. I am, after all a newbie to this, and trying to figure out most of it without any(except online and video) help. Never know when Uncle Murphy's gonna show up.

[Ken Fitzgerald]

Mickey....you are doing the right thing and....most often those screws are used should one decide to sand in "Reverse"....

[mickey cassiba]

I know Ken...and my little lathe has no reverse, but the blank was heavy and the 'panic stop' (grabbed the handwheel while I killed the power) allowed the chuck to unscrew. I didn't notice 'til I fired it back up and it screwed itself back on(strange noise!) Good thing the tool rest was there to catch it.
MC

[Keith E Byrd]

Well I will start using them - Like you I am fairly new at this and learn by asking questions here, reading and video. I need to join a club and get some hands on tutoring!

[Jim Sebring]

Only two of the red fiber wads are supplied with a chuck to provide a cushion between the set screw and the spindle. Once mine were shot (about two uses!) I started using #7 1/2 lead shot pellets in the grub screw dimple. Just ask a shotgun reloading friend for a few pellets.

[mickey cassiba]

I used a couple of pieces of nylon cable tie...some of the toughest stuff I've ever encountered. If that doesn't do it I've got some shot...didn't think of that.
MC

[Rich Aldrich]

Grub screws also come in handy when you get done sanding in reverse and you start a new piece. The tool feels so dull - it just won't cut.:confused: About the time you think the tool must really be really dull, you realize the lathe is still running in reverse from the previous sanding job....... not to say I have ever done that.:o:eek::D

[mickey cassiba]

One day I may have one of those 'cool' lathes that run forward and backward(actually I do, it's a Warner & Swazey Turret Lathe, but it''s not here.) My little Delta midi only runs top coming...and way too fast for some of the stuff I've tried. I have had dull tool moments though...the tool was upside down:eek:Wood turnin' is so different from what I came up with. But it's way funner(is that a word?)

[John Keeton]

Mickey, I change chucks on a lathe with great frequency, and having to fool with a grub screw would not fit into my routine. If you don't have reverse on your lathe, you may not have a reason for the grub screw. In fact, only the Delta version of the G3 is drilled and tapped for the screw as I recall.

If you do not spin the chuck on so that it seats well, then on a forced stop, sometimes the chuck will want to spin off like you experienced. But, if it is seated well, I have not had that happen.

In the event you do end up with a lathe with reverse, there have been previous threads on this topic, and the responses varied considerably. But, even when sanding in reverse I do not use the grub screw. I sand lightly, and at low speed - and, when I put on a chuck I spin it on letting it "bite" against the spindle shoulder. Seems to work fine for me, but I don't want to advise you to do the same. Yours may not seat as well, or you may sand differently than do I.