Re: Dressing 0.25" Semi Rigid cable

Michael Scott

Hi Conrad
You can get small pipe cutters used by model engineers which are quite rigid and work better than those intended for plumbing work.
Sent: Thursday, July 28, 2016 2:03 PM
Subject: Re: [ukmicrowaves] Dressing 0.25" Semi Rigid cable

Hello Michael a standard B&Q (Gamma for our Dutch readers) pipe cutter has too much lateral play to actually cut with. I used to use them with Heliax. However for scoring a nice clean mark they are good enough. Thanks for the reminder.

Problem is that the 0.25" semi rigid that I am working with has a tinned braid outer not a solid copper jacket and as such is quite easy to deform.

Pipe cutters work great with solid copper outer semi - rigid because sufficient force can be applied to stop any lateral movement of the blade during rotation.

Maybe there is a high quality version of the cheap pipe cutters available.

I don't want to get it wrong too often as it's expensive.


Conrad PA5Y

On 28 July 2016 10:34:10 CEST, "'Michael Scott' g3lyp@... [ukmicrowaves]"
Hi Conrad
A tip which Paul Wade published in MUD a year or so back was to use a small pipe cutter. I have had mixed success with it as it tends to round the edge of the copper which makes removing the waste bit more difficult. With care you can make a dent round the copper and use this as a guide for a knife or fine saw.
73, Mike, G3LYP
Sent: Wednesday, July 27, 2016 10:39 PM
Subject: [ukmicrowaves] Dressing 0.25" Semi Rigid cable

Hello I have some N types to put on some PTFE based semi-rigid cable. It
has similar construction to RG402 and also has an FEP jacket. The
connectors are the correct ones from

The tinned braid outer is extremely tough and I need to make sure that I
can cut it very clean and square without any distortion. I suspect that
a very fine toothed saw of some type will be best.

Any advice?


Conrad PA5Y

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