I would imagine its not so much the heat as how soft the moulding plastic is 
and weather it wears really quickly or not

Just a thought .

 

Bill

 

 

From: legacy-ornamental-mills@googlegroups.com 
[mailto:legacy-ornamental-mills@googlegroups.com] On Behalf Of Brigitte Graham
Sent: Tuesday, 8 August 2017 6:30 PM
To: legacy-ornamental-mills
Subject: Re: making a tap for the 5/8-4 acme thread

 

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 <tel:(718)%20899-1502> 

Fax: 718-899-0556 <tel:(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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