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Forum topic by kmetzger posted 09-06-2015 09:37 PM 772 views 0 times favorited 11 replies Add to Favorites Watch
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kmetzger

147 posts in 1286 days


09-06-2015 09:37 PM

I just bought a Nova DVR XP from Tools Plus and it comes with an Infinity chuck and insert. I assume the Infinity chuck is a SuperNova2, but I’m not sure what the inside thread diameter of the SuperNova is and if this diameter is the same as the Precision Midi, which is 1” 8tpi. I’d like to be able to use the Precision Midi on the 1 1/4” spindle of the DVR. Is this the correct insert?

http://www.novatoolsusa.com/NOVA-INSERT-L-1-1-4-8-TPI-RH-ILNS.htm

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25


11 replies so far

View TheDane's profile

TheDane

4997 posts in 3131 days


#1 posted 09-06-2015 10:04 PM

Looks to be correct, but I would shoot Teknatool’s support folks a note to make sure.

It seems that I saw a chart somewhere that shows which adapters work with various chucks and spindle sizes, but I can’t seem to locate it on their website.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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LeeMills

273 posts in 769 days


#2 posted 09-06-2015 11:08 PM

The Precision Midi should be direct threaded for 1X8 and not take an insert. The threaded insert exterior on all Nova inserts are the same regardless of what size spindle they thread onto (something odd like 35mmX7). They are not made to fit the Midi (or the G3-D, nor the G3-Comet which are also direct threaded).

Your Infinity chuck needs an insert and I assume it would come with the lathe and chuck if it was a package deal.
I believe PSI sells a 1.25X8 to 1X8 adapter but I do not know if it induces run out or not. Here is a link to PSI
http://www.amazon.com/PSI-Woodworking-LA11418-Headstock-Spindle/dp/B000KIADBS

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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LeeMills

273 posts in 769 days


#3 posted 09-07-2015 12:08 PM

I rambled.
There are no inserts to use your Midi with a 1.25” spindle as it is not an insert style chuck.
The insert you linked to will fit any Nova chuck which takes an insert.

Here is a link to inserts but the exterior is the same for all, only the interior is threaded differently.
http://www.teknatool.com/products/Lathe_Accessories/adaptor_page.htm

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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kmetzger

147 posts in 1286 days


#4 posted 09-07-2015 02:26 PM

Hi, Lee. I think I’m in luck with my Precision Midi. I did a little research and found that there are two types of Precision Midis. I have the standard insert/adapter type chuck rather than the dedicated thread type.
Std Insert/Adaptor Type Chuck (Code 48115) Requires an insert to fit to lathe.
http://www.teknatool.com/products/chucks/Midi/Nova_Midi_Chuck.htm

But I did follow Gerry’s advice and contacted Teknatool support.

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25

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LeeMills

273 posts in 769 days


#5 posted 09-07-2015 04:18 PM

Well that is the first of them I have ever heard of but good for you. They do make the G3 in both insert and direct threaded styles so maybe at one time the did the same with the Midi.
They do change specs sometimes. I have some old 35mm spigot jaws where the exterior is “box” jaws for 2” and 3” boxes.
You should be able to remove the insert from you Midi and see if the insert from the Infinity will fit.
If so then your initial insert posted should fit also.

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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kmetzger

147 posts in 1286 days


#6 posted 09-09-2015 08:32 PM

Just got the Teknatool answer after sending them a photo of my chuck: “sorry to say , but that is a direct thread chuck. you can’t fit a insert inside that hole, the only other way is to buy a new chuck , one that is open threaded. sku number is 48202. you can look that number up at, WWW.NOVATOOLSUSA.COM”

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25

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LeeMills

273 posts in 769 days


#7 posted 09-09-2015 09:39 PM

I wouldn’t buy a new chuck until I tried the spindle adapter I linked to prior. It will probably work just fine and if it does have run out you will know what caused it. If I doesn’t have run out you are home free for $20. I’m guessing it will probably NOT have runout since that is what they are made for ( I just don’t trust some of PSI’s quality in all items). I have never used the adapter but I have read post where lots of folks have.

This shows a spindle adapter in use. I do not know if it is a PSI adaper or even if it is a Nova chuck but it will work the same way. It just moves the work out from the headstock a couple of inches but that is not a problem with the small chuck.

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

View TheDane's profile

TheDane

4997 posts in 3131 days


#8 posted 09-09-2015 10:53 PM

Kim … FWIW, when I got my new Nova lathe (which has a 1 1/4” x 8tpi spindle) I wanted to use my old Nova G3 direct-thread chucks.

I bought a PSI Woodworking LA11418 Headstock Spindle Adapter (1-1/4-Inch-by-8tpi to 1-Inch-by-8tpi Chuck) for under $20.

Works like a charm … I can use either of my G3’s on the new lathe.

Here’s the adapter I bought:
http://www.amazon.com/gp/product/B000KIADBS?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

If your existing chuck is 1” x 8tpi and your lathe is the same as mine, this might be the ticket.

Edit: There is a glaring safety omission: no set screw(s). Without set screws, there is no way to secure this to spindle for reverse turning. Running in reverse with this adapter is dangerous.Otherwise, it is fine … beefy construction, and negligible run-out.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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kmetzger

147 posts in 1286 days


#9 posted 09-10-2015 12:08 AM

Thanks, Lee and Gerry. I’ll get the PSI adapter. What a relief that I won’t have to abandon my Precision Midi. It will be good to have a second scroll chuck with old-type jaws (as opposed to the Infinity jaws) already mounted.

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25

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LeeMills

273 posts in 769 days


#10 posted 09-10-2015 12:24 AM

If you wish to secure it you can get a tap with appropriate drill bit for about $6 and add a set screw to the adapter to tighten to your lathe spindle.
You can use Loctite for the adapter into the chuck; you will have to heat it up if you did ever want to remove the adapter from the chuck but you may never want to.

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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TheDane

4997 posts in 3131 days


#11 posted 09-10-2015 12:26 AM

Kim … I retro-fitted my G3 chucks and jaws with the Infinity adapters. A little pricey, but now I have 7 sets of jaws that I can use on any of three chucks.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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