M33x3.5 Niles ™Mandrel
From: $19.50
$19.50 This M33 x 3.5mm threaded mandrel fits the larger Oneway lathes
$23.50 with 1 7/16″ stub drill bit for the stainless steel inserts
$26.98 with 2 stub drill bits: 5/16″ and 11/32″ $27.70 value
$30.98 with 5/16″ and 11/32″ stub drill bits and 3/8″ tap $32.95 value
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This Niles ™mandrel threads onto the headstock spindle and has the unique tapered-cut flute making it the best self-tapping mandrel on the market. It has a 3/8″ x 16 tpi threaded stud that works with just about all the stoppers on the market and numerous other projects: ice cream scoop handles, shaving brushes, pizza cutters, etc. They have a black oxide coating for rust prevention. The neck or step below the threaded stud is 13/16″ diameter which matches the tops of all my stoppers. This mandrel does not use a draw bar. It comes with 2 nylon spacers (a spare because you will lose one!) which are used to help keep the wood from locking on the mandrel as you turn it. Use a 1 1/16″ wrench on the flats to start turning mandrel off the spindle or to hold it steady while unscrewing your finished piece..
*Tip: if the wood does get a death grip and you can’t get the project off the mandrel, put it in the freezer for 25 minutes and it will unthread once the metal shrinks. Also try a little beeswax or soap on the mandrel before threading it into the wood.
The shorter stub drill bits won’t “wander” if they hit a tight wood grain. The 5/16″ is the standard size when threading a 3/8″ hole; the 11/32″ is for dense wood, acrylic and resins.
The Spiral Tap cuts the threads the fastest and cleanest but you do need to drill the hole 1/4″ deeper as, like a regular tap, the threads don’t start right at the bottom.
Check this page: Mandrel Comparison if you are not sure which mandrel to purchase: this page explains the differences and usages. If you are still unsure, call me: 503-939-4565 and I will help you out.
Lathes Specifications: here is a list of lathe spindle sizes and Morse taper if you are not sure.
*Basic bottle stopper turning video (threading the mandrel starts at about 3 min.): Roper Woodturning
Niles original mandrels are only made in Missouri.
If you have any questions, email Carl Jacobson at nilesstopper@gmail.com or call 503-939-4565, PST.
Additional information
| Weight | 14 oz |
|---|---|
| Drill Bits | 3/8" Tap, 5/16" and 11/32" Stub Drill Bits, 5/16" and 11/32" Stub Drill Bits, 7/16" Stub Drill Bit (for inserts), No Drill Bit |
Reviews (2)
2 reviews for M33x3.5 Niles ™Mandrel
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Kirk Mathews –
In response to the reviewer who wanted the threaded tap part of the mandrel to be longer: It is just the right length to use for the intended purpose. If you want deeper threading, get a starting tap to use with the bottoming tap. To help start the tap aligned properly with the axis of the hole, first thread your wood blank with the mandrel (on the lathe, with tailstock support for alignment with the hole) down as far as the mandrel threads extend. Then deepen the threads with the taps. (Mount the blank in a vise for this last step, presuming it is still square.)
Ruth Niles –
Thanks for helping another customer, Kirk.
Jim Vik –
I purchased the headstock threaded adapter for the 3/8” bottle stoppers, etc. I like it very much but wish it had more threads. In other words a little longer. I stripped one project in softer wood the other day. Also, it would be nice to have more than the one finished diameter at the root of the threads. If you offered several spacers, we would have more options for regulating the base size of the bottle opener, stopper, scoop etc. It is a very well made product and well worth the price. Thank you for you excellent service of my order and a great product.
Ruth Niles –
We listen to customer suggestions and now offer 2 size mandrel adapters for more options to regulate the base diameter. Thank you, Jim Vik, for that suggestion.