Full Version: Knurling Stainless steel pipe

From: Peter [#1]
 28 Feb 2007
To: ALL

Hi Guys,
anyone with an engineering bent out there ?

I have stainless steel pipe about 1 and 1/4" across and about 18" long that needs to be knurled or roughened up so it can be used as a non slip handle.

It will then be etch primed and 2 pack polyurethaned.

Non slip paint is not an option, the surface of the SS must be course enough to provide a non slip handle after paint coating.

any suggestions?

regards
Peter

From: Cody (BOBTNAILER) [#2]
 28 Feb 2007
To: Peter [#1] 28 Feb 2007

I've used a knurling tool on steel rod before, with the help of a lathe.

I've never tried stainless, but I'm sure it can be done....with tough tooling and some patience.

From: Peter [#3]
 28 Feb 2007
To: Cody (BOBTNAILER) [#2] 1 Mar 2007

Thanks Cody,

Ive gone to several very large Engineering firms and they wont let it near their knueling tools

From: Harvey only (HARVEY-ONLY) [#4]
 28 Feb 2007
To: Peter [#1] 28 Feb 2007

Long past I did some knurling on semi hardened steel on a lathe. It is the only way I know how to do it.

From: Peter [#5]
 28 Feb 2007
To: ALL

thanks Cody and Harvey.

regards

Peter

From: wolvey (JIMH) [#6]
 28 Feb 2007
To: Peter [#5] 1 Mar 2007

Hi Peter- In my "previous life" I have a fair amount of experience with machining. We made and used many knurled products with our machinery. I am not surprised that the machine shops you have contacted are running away. Stainless steel will absolutely destroy their knurling tools in very short order. Most knurling tooling is designed to handle mild steel. However, if you want to keep looking, you might find someone who has the specialized knurled tooling designed to handle stainless. But be prepared to pay much more. There is a reason. This tooling is extremely expensize. Perhaps an alternative to knurling could be to have alternating rings around the diameter. That is you could have different depths and widths turned into the stainless. Not as effective as knurling but it might work. Your local machining shops would not be opposed to this. They would be much better equipped for a more simple turning like this. Good Luck!!!! Just curious what is this pipe for??? -Jim H.

From: Peter [#7]
 1 Mar 2007
To: wolvey (JIMH) [#6] 1 Mar 2007

Hello Jim,

Thanks for your help. The steel pipe will be fashiond into grips for buses overseas. The handle grips that you grab on the outside of the bus as you help yourself up and inside.

regards
Peter

From: Harvey only (HARVEY-ONLY) [#8]
 1 Mar 2007
To: Peter [#7] Unread

If memory serves they are not really knurled. They are spiral cut in two directions.

How about the place you are getting them from? Can they do it?

From: ddd (DALE013142) [#9]
 1 Mar 2007
To: Peter [#7] Unread

Why not grit blast them ww/ a size 30 or so grit? that will be an excellent anchor for the coating
ddd

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