LumberJocks

McNaughton coring system questions

  • Advertise with us

« back to Woodturning forum

Forum topic by cdaniels posted 03-17-2016 05:22 PM 603 views 0 times favorited 8 replies Add to Favorites Watch
View cdaniels's profile

cdaniels

1311 posts in 964 days


03-17-2016 05:22 PM

I just ordered the standard sized McNaughton system for coring out blanks. I also ordered the mike mahoney DVD on recommendation. I’m trying to get as much info as I can before I get started so my questions is when choosing what size blanks to core is there a thickness limit on what you can core? I mean a lot of the logs I get are around 12” diameter which means I get around a 3-5” deep blank so is that enough to get a few cores out of or is that too shallow? I can get much larger pieces but those are the usual sizes that are the most abundant. any advice would be great on the system!

Chris

-- Jesus was a carpenter... I'm just saying


8 replies so far

View Wildwood's profile

Wildwood

1882 posts in 1597 days


#1 posted 03-17-2016 08:14 PM

https://www.youtube.com/watch?v=xk-Z-scS84w

If have any questions can contact Reed by e-mail with address at his web site.

http://www.robohippy.net/store/

-- Bill

View soob's profile

soob

223 posts in 671 days


#2 posted 03-21-2016 02:28 PM

Thickness of the blank tends to be the limiter. On green wood, you lose 1/2” or so for truing up and the tenon, then for the big bowl you need to leave at least 1” for every 12” of diameter, plus you lose 1/2” for the coring kerf.

So if you start out with a 3” blank there’s basically nothing left for a core.

View cdaniels's profile

cdaniels

1311 posts in 964 days


#3 posted 03-21-2016 03:21 PM

ok thanks that’s about what I was guessing

-- Jesus was a carpenter... I'm just saying

View soob's profile

soob

223 posts in 671 days


#4 posted 03-21-2016 03:29 PM

That being said…

You might be able to cheat a little on the depth (as that’s the maximum depth, after all). If your tenon is going to be a foot on the big bowl, you might be able to get a 1.5”+ thick platter out of that 3” blank.

View cdaniels's profile

cdaniels

1311 posts in 964 days


#5 posted 03-24-2016 05:58 PM

I currently am using a nova G3 chuck with the 50mm jaws that come with it. I’m waiting on a Supernova 2 chuck to come in and I have 100mm Jaws to go on either one. my question is that if I put the 100mm jaws on the G3 will it provide a strong enough hold to core out some 12” x 6” bowls?

-- Jesus was a carpenter... I'm just saying

View Wildwood's profile

Wildwood

1882 posts in 1597 days


#6 posted 03-24-2016 06:27 PM

If get a free Packard catalog tells you the 100 & 130mm jaws only fit SN2 chuck, not sure what Teknatool catalog says!

-- Bill

View cdaniels's profile

cdaniels

1311 posts in 964 days


#7 posted 03-25-2016 12:33 AM

Jaw Travel Range Table

Imperial (Inch)

Jaw Set & Chuck Suitability Expanding Action Specifications Contracting Action Specifications
Jaw Set Suitable Chuck Square Stock Spigot Mode
Min Max Min Max Min Max
100mm JAW Precision Midi* Not Recommended Not Recommended Not Recommended
Nova G3 3.819 4.646 2.205 3.031 3.071 3.898
SuperNova2 3.819 4.646 2.205 3.031 3.071 3.898
Titan 3.819 5.039 2.205 3.425 3.071 4.291

-- Jesus was a carpenter... I'm just saying

View Wildwood's profile

Wildwood

1882 posts in 1597 days


#8 posted 03-25-2016 12:06 PM

After posting went looking for an answer, didn’t know if Packard catalog mistaken or omitted correct information. Packard’s catalog says right below 100 & 130 mm Dovetail jaws: “Both of these jaws should only be used on the SN2 chuck.”

Folks at Packard are woodturners so would not have a problem asking if they knew something Teknatool doesn’t.

Yes one of biggest feature of Nova chucks is jaw compatibility. Looking at G-3 page has this caveat “Common Accessory Jaw Fixing Profile – compatible across all NOVA chucks and accessories.” Looking at 100mm jaw compatibility page says same thing you posted.

http://www.teknatool.com/products/Chuck_Accessories/100mm.htm

Perhaps once get your new SN2 chuck & 100mm jaw set will tell us how well that jaw set works on a G-3.

-- Bill

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com