Harvey,
It might be, but it is the same principle, it's (re)mouldable for ever!
As the split nut is never going to be going at any great speed along the
acme thread, it won't be creating any heat to make it "melt"
I believe you can add to the original that you have made if you 'melt' the
surface with a hot air gun.
Legacy Widow

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On 8 August 2017 at 04:17, Harvey Matyas <hmatyas0...@gmail.com> wrote:

>
> Is it called  InstaMorph ?
> https://www.youtube.com/watch?v=hD6IuhZT9-4
>
> On Mon, Aug 7, 2017 at 6:53 PM, Brigitte Graham <
> brigittegraha...@gmail.com> wrote:
>
>> Hi Gentlemen,
>> Have you thought of using the plastic that is mouldable after it has been
>> melted in boiling water?
>> I can't remember what it is called. It comes as a bag of small opaque
>> white (and black) beads of plastic that you pour into some very hot water,
>> when they are ready for use they go a transparent colour, and you clump
>> them together in the water with a spatula, then lift the lump out, and
>> (careful, because they are very hot) push it round the acme thread, and
>> mould the out side to a large lump. Leave it to cool (it goes opaque
>> again). Wind it off the thread, machine the outside to what ever shape you
>> want it to be, cut it in half ~ one split nut! If it all goes pear shaped,
>> you just put the 'lump' back in some boiling water and start again.
>> Tomorrow, I will try and find the name of this stuff.
>> I have used it to make some knobs on wingnuts that were too fiddly to
>> tighten and loosen.
>> Cheers
>> Legacy Widow
>>
>>
>>
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>> On 7 August 2017 at 20:03, MWF <mwfos...@earthlink.net> wrote:
>>
>>> Joe,
>>> I, too, attempted to find a source for the Tap - figuring I'd be helping
>>> folks in The Group that wanted/needed one.
>>> I contacted a significant distributor - and here is the reply I received
>>> after their two to three day attempts to source a tap for me:
>>> (Note - there was more info in their reply - but it had a
>>> "non-disclosure" warning at the bottom.  Don't feel its worth seeking their
>>> "permission" to share it - because it is of no value since the "bottom
>>> line" is:  They can't source the tap.)
>>>
>>> It appears that your method is the way to go.  Perhaps you (or Tim if he
>>> has a tap) can calculate how much it will cost you to make a number of the
>>> blocks with your tap and let The Group know what we'd be looking at cost
>>> wise (with your profit and S&H included in the price).  Based upon that,
>>> you could take orders - if that's a viable task for you to entertain.
>>>
>>> Have a Wonderful Week - and thank you for sharing you thoughts and
>>> efforts with The Group.
>>>
>>> Mac
>>> ------------------------------
>>>
>>> Sorry,  but Your Quote Request below will be a No Quote for Xxxxxxx (the
>>> corp's name was here).
>>>
>>> I have Checked with Our Sources and they say that a 5/8-4 is too coarse
>>> of a thread
>>>
>>> Thank You for the Opportunity to Quote.
>>>
>>>
>>>
>>> NONSTOCK REQUEST
>>>
>>>
>>>
>>> ITEM #/EDP #/ MODEL # N/A
>>>
>>>
>>>
>>> BRAND NAME / OR IF BRAND SPECIFIC:N/A
>>>
>>>
>>>
>>> DESCRIPTION OF ITEM:  5/8 DIAM – 4 PITCH,  ACME THREAD ROD  TAP
>>>
>>> LENGTH 2 INCHES
>>>
>>> USING ON NYLON AND DELRIN
>>>
>>>
>>>
>>> QUANITY NEEDED: 2 TO 4 - POSSIBLY MORE
>>>
>>>
>>> ------------------------------
>>>
>>> -----Original Message-----
>>> From: 'joe biunno' via Legacy Ornamental Mills
>>> Sent: Aug 7, 2017 12:47 PM
>>> To: Legacy Ornamental Mills
>>> Subject: making a tap for the 5/8-4 acme thread
>>>
>>> starting a dedicated topic for this as I think it warrants it...got an
>>> email from a tool supplier that services the metal working industry in
>>> regards to obtaining a factory made, 5/8-4 acme thread, right hand tap...it
>>> would have to be made to order...here is the quote...
>>>
>>>
>>> 5/8-4 acme tap, I am quoting you a 4pc set (semi rougher, rougher, semi
>>> finisher, finisher) $717.00
>>>
>>> 5-7 days TO MANUFACTURE
>>>
>>> 8” OVERALL LENGTH
>>>
>>> 3” THREAD LENGTH
>>>
>>> This is a “No guarantee no return”
>>>
>>> Victor Machinery Exchange
>>>
>>> 33-53 62nd Street
>>>
>>> Woodside, NY 11377
>>>
>>> Phone: 718-899-1502 <(718)%20899-1502>
>>>
>>> Fax: 718-899-0556 <(718)%20899-0556>
>>>
>>> www.victornet.com
>>>
>>>
>>> now, this quote was for a 4 pc. set, which they took it upon themselves
>>> to quote...we only need 1 tap, and I am sure that you could order just the
>>> one tap that is needed, but I would think that it would come at a premium
>>> price...my guess that it would be about $300.00 for the one tap...certainly
>>> not what I would want to spend, so we  decided to make the tap from some
>>> leftover acme rod we had(see photos attached)...we made a four flute tap
>>> with the end a bit longer...the end matches the diameter of the hole you
>>> would need to pre-drill into the delrin or nylon, before you begin to use
>>> the tap...the idea being that the tap would have a better chance of going
>>> straight through the material being used...did a test on some white delrin
>>> and it worked very well...the test piece easily threads onto the lead
>>> screw, with little to no play...took about 1 1/2 hrs. to make...thinking
>>> about making a few split nuts and then putting the tap away for future
>>> generations to use...LOL!...more to follow...joe b.
>>>
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>>
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