I have some small nylon 6/6 dowels that I need to fit in some brass tubes.
Due to the shoulders in the brass an the mating grooves in the nylon I can't
just force the nylon into the brass. I ned a good way of heating the Nylon
up so that it will be more forgiving and ease in. The groove is .014 radius
deep and the shoulder in the brass tubing is like wise. I was thinking
about using a microwave for this, should that work?
sincerely,
John

"John Wizman" wrote in message
link.net...
I have some small nylon 6/6 dowels that I need to fit in some brass tubes.
Due to the shoulders in the brass an the mating grooves in the nylon I
can't
just force the nylon into the brass. I ned a good way of heating the
Nylon
up so that it will be more forgiving and ease in. The groove is .014
radius
deep and the shoulder in the brass tubing is like wise. I was thinking
about using a microwave for this, should that work?
sincerely,
John



You're not going to have good luck with that. Nylon doesn't really get soft
like some other types of plastic. It goes almost instantly from a solid to a
liquid when you reach it's melt point.

--Not sure of this "alloy" but I remember folks used to
"anneal" nylon model airplane props by tossing them in boiling water
for a few minutes. Worth a try anyway...

--
"Steamboat Ed" Haas : Bummed to be living in the
Hacking the Trailing Edge! : Golden Age of Bull****...
http://www.nmpproducts.com/intro.htm
---Decks a-wash in a sea of words---

Hi John,

A microwavew willnot work as there is not enough moisture in the nylon.

If boiling water doesn't work, I used to bend some plastic by using
boiling antifreeze. It has a much higher boiling point than water. I
used to make bell mouth intakes for cars using PVC pipe.

I turned up a inverse bell-mouth spindle, heated the pastic for about 2
minutes and pushed it over the spindle, let it cool a bit. Worked a
treat.

Nylon is also quite hygroscopic so boiling it may actually make your
problem worse as the nylon may absorb water and get bigger. I belive
Nylon-66 is much less prone to absorbtion, if you know whatgrade you
have.

Dave

I don't know how well it will work with nylon, but I usually use my
heat gun with a wrap-around shield to soften plastics.

In article .net,
"John Wizman" wrote:

I have some small nylon 6/6 dowels that I need to fit in some brass tubes.
Due to the shoulders in the brass an the mating grooves in the nylon I can't
just force the nylon into the brass. I ned a good way of heating the Nylon
up so that it will be more forgiving and ease in. The groove is .014 radius
deep and the shoulder in the brass tubing is like wise. I was thinking
about using a microwave for this, should that work?
sincerely,
John

I'd also run this by the folks over at...

news:sci.polymers

Erik

On Wed, 30 Nov 2005 15:28:39 GMT, "Dave Lyon"
wrote:


"John Wizman" wrote in message
hlink.net...
I have some small nylon 6/6 dowels that I need to fit in some brass tubes.
Due to the shoulders in the brass an the mating grooves in the nylon I
can't
just force the nylon into the brass. I ned a good way of heating the
Nylon
up so that it will be more forgiving and ease in. The groove is .014
radius
deep and the shoulder in the brass tubing is like wise. I was thinking
about using a microwave for this, should that work?
sincerely,
John



You're not going to have good luck with that. Nylon doesn't really get soft
like some other types of plastic. It goes almost instantly from a solid to a
liquid when you reach it's melt point.

On Wed, 30 Nov 2005 15:12:19 GMT, "John Wizman"
wrote:

,;I have some small nylon 6/6 dowels that I need to fit in some brass tubes.
,;Due to the shoulders in the brass an the mating grooves in the nylon I can't
,;just force the nylon into the brass. I ned a good way of heating the Nylon
,;up so that it will be more forgiving and ease in. The groove is .014 radius
,;deep and the shoulder in the brass tubing is like wise. I was thinking
,;about using a microwave for this, should that work?
,;
Well it will absorb up to about 8% water so microwave would be worth a
try.

The glass transition temperature is 50 C and the melt temp is 255+ so
you have some room to work.

A couple URLs for you if you need physical property data.

http://www.maropolymeronline.com/Pro...properties.asp

http://www.matweb.com/SpecificMateri...&group=General

How about heating the brass to increase the i.d.?