AWGB Woodturning Forum
General Category => General Discussion => Topic started by: Les Symonds on March 03, 2018, 02:37:24 PM
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Does anyone know if there are any threaded inserts on the market? I'm thinking of some sort of hard plastic or possibly brass, matching male and female threaded collars that can be set into a body/lid of a box.....for those of us who are not into thread chasing!
Thanks...Les
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Haven't seen threaded ones just the hinged ones. Might have to learn to thread chase. Got the tools and been meaning to have a go myself but not got round to it .
Pete
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Hi Les. You could try this American site http://www.fromwalnuttoantlers.com/. Malcolm.
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Les I remember seeing threaded rings for eggs a while back, not sure if you can still get them though. If you want something specific I can always cast you a pewter ring and thread that for you.
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Thanks everyone for the responses.
John...that is remarkably generous of you, but this isn't for a one-off....I was thinking of a design for children's money boxes with threaded "hatch", so would need several of these. Perhaps I'm going to have to bite the bullet and learn to chase threads.
Les
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Les,
I can't get close to anything as smart as Malcy, but I remember (a long time ago) reading about a guy in America who makes Burr and Acrylic Urns fro ashes, he used plastic plumbing unions to join the lid and base as they need to be an airtight seal.
In the same way you can get Brass pluming/gas threaded unions to over 40mm. They would need cutting down a bit but it can be done on a wood lathe with HSS tools.
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Excellent ideas coming through. The imported brass collars look great, but would be a bit pricey, especially if carriage charges are added on.
Bryan....the notion of plastic plumbing fittings had occurred, but I really didn't want to use plastic for these boxes, but brass.....well, spot on!
Thanks all...Les
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Do you have to have them threaded I made some square money boxes some time ago and made removable bottoms that twisted to unlock will see if I can find them. Found them. Maybe be able to modify this
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Hi Derek....that's a fair point and a good solution. Thank you.
Les
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Les
Bite the bullet and just thread them yourself.
It really isn't that hard. I wanted to chase a thread so went to see Tom Pockley the fellow that taught me to turn and under his guidance had a thread cut in no time at all.
Light cuts and a bit of timing, I'm sure a man with your skill level will have it nailed in no time at all.
Failing that Simon Hope does a lovely threading jig :)
All the best
Ed
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Is it worth getting an engineering company to make up a small batch of parts to order ?
Simple little bits like this ought to be ideal for CAD/CAM manufacturing. You might even find a market for them with other turners and cover your costs.
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Hi Derek....that's a fair point and a good solution. Thank you.
Les
You will notice the slot in the bottom runs inline with the tabs and to unlock the slot need to run along the length but if you were to use this you would need a reference point made on the bottom to make opening easier.
Having said this I also need to have a good go at some thread turning as I have the tools for nearly a year and with one thing or the other have not really used them in anger just the odd bit of practice on different wood.
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Is it worth considering getting a threading jig (https://hopewoodturning.co.uk/jig-s/threading-jig/) as marketed by Simon Hope?
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Turners Retreat have a 20mm egg threaded insert on its website
https://www.turners-retreat.co.uk/small-egg-ring-20mm-dia
Fred Taylor
orchard-woodturners.org.uk
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Just for information I teach thread chasing. Based in Wiltshire.
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Hi Derek....that's a fair point and a good solution. Thank you.
Les
You will notice the slot in the bottom runs inline with the tabs and to unlock the slot need to run along the length but if you were to use this you would need a reference pint made om the bottom to make opening easier.
Having siad this I also need to have a good go at some thread turning as I have the tools for nearly a year and with one thing or the other have not really used them in anger just the odd bit of practice on different wood.
A reference pint, what are you reccommending there Derek?
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Hi Derek....that's a fair point and a good solution. Thank you.
Les
You will notice the slot in the bottom runs inline with the tabs and to unlock the slot need to run along the length but if you were to use this you would need a reference point made on the bottom to make opening easier.
Having said this I also need to have a good go at some thread turning as I have the tools for nearly a year and with one thing or the other have not really used them in anger just the odd bit of practice on different wood.
A reference pint, what are you reccommending there Derek?
Trying to type faster than the brain ;D ;D ;D have changed the text in this quote :-[ :-[ :-[ and my original post
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Hi Tim....threading isn't high on my agenda, just needed for a project and if I'm going to make one such item for a commissions, I might just as well make several and put them into stock, but I can't really justify an outlay of about £300, which is what the Simon Hope jig would cost with postage.
Les
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Here’s a thought. Not sure what size you want, but if you google screw top pots on Amazon, you can get lots of low cost different size containers in plastic or aluminium. You could cut these to suit what you need and insert them. Ready made threads. Hope this helps. Malcolm.
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We have had several Demo Days at Crow Valley in the last year but I am pretty convinced that it was Simon Hope that had some threaded inserts of various sizes in his for sale display. They were sold as matching pairs, it may be worth an enquiry.
Julian
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Hi Les
I’d be happy to pop across for a day and show you how to chase a thread. Then you could use a range of acrylics perhaps?
Cheers Dave
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Hi Dave...that's a very generous offer.....I don't have any thread chasing tools, though. Would you be able to bring any with you, or would it be better for me to get my own first?
Les
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... I am pretty convinced that it was Simon Hope that had some threaded inserts of various sizes in his for sale display....
Thanks for the lead, Julian.....I've searched Simon's site but haven't found anything.
Les
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Hi Les, No they are not on his website but I am sure it was he that was selling them. They were acrylic threaded rings, very thin. One male and one matching female of various diameters.
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Thanks Julian....my customer for the first one that I make is a staunch anti-plastics sort of person, so I might bear this in mind for further stock, but for this first piece it'll need to be wood or brass.
Les
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Les have a look at tank connectors made in brass. This is something I have used in the past and they turn down well on a woodturning lathe.
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Sounds like there is a niche market there for someone!
Ron
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What ever you go for remember the coinage size when deciding I did find a brass sink plug hole but it was £18 you could have made a few from it if you can buy extra brass nuts
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It would be free once you learn to chase threads.
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My lathe only goes down to around 800rpm can you chase threads at this speed? I have seen a few videos and they all work at around 350 rpm. There are a couple of thread chasing sets on ebay and thought I would give it a go. :-\
I could then come to John (Bowler hatted guru) for a lesson when I had messed it up !!
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You may struggle to chase threads at 800 rpm. 425-430 is the fastest I have ever chased at and that really is a bit too fast. It's odd actually as I am happy chasing a thread on the graduate lathe at 425 but struggle on my 330 lathe to chase at 430rpm.Only 5 rpm difference, you wouldn't think it would make much difference but with me it does.
Crazylegs you are always welcome to come for a lesson. What lathe do you have?can our group intelligence work out a way to help you reduce the speed?
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My lathe is from Axminster but they don't do it anymore but it is identical to this Sip one.
www.sipuk.co.uk/sip-01936-variable-speed-cast-iron-midi-wood-lathe.html
It has a variable speed knob that seems to be a rheostat. I expect it could be modified. I would love some one with more knowledge to come up with a simple plug adapter that I could dial it down a bit. I expect that's asking a bit much.
On a different subject how did you get your grinder to turn the other way?
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My lathe is from Axminster but they don't do it anymore but it is identical to this Sip one.
www.sipuk.co.uk/sip-01936-variable-speed-cast-iron-midi-wood-lathe.html
It has a variable speed knob that seems to be a rheostat. I expect it could be modified. I would love some one with more knowledge to come up with a simple plug adapter that I could dial it down a bit. I expect that's asking a bit much.
On a different subject how did you get your grinder to turn the other way?
I also have that lathe from Axminster and mine goes down to 650RPM but that is possibly still to fast
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My lathe is from Axminster but they don't do it anymore but it is identical to this Sip one.
www.sipuk.co.uk/sip-01936-variable-speed-cast-iron-midi-wood-lathe.html
It has a variable speed knob that seems to be a rheostat. I expect it could be modified. I would love some one with more knowledge to come up with a simple plug adapter that I could dial it down a bit. I expect that's asking a bit much.
On a different subject how did you get your grinder to turn the other way?
If the variable speed knob is a rheostat, it sounds like you have a DC motor. In which case it is possible to run the motor yet slower by further reducing the driving voltage. However, the speed control could just be a standard potentiometer which is controlling a PWM driver for the DC motor. That may take a little more modification but isn't impossible.
If on the other hand it's an inverter driven AC motor or a DVR motor, modification is much more tricky.