RE: Hot knife for HA conduit ...

["Chris Hunter" <cjhunter@xxxxxxxxxxxx>]

Good idea !   Our current one is for circuit boards' but maybe 'could
buy a larger one ... I'll see what Maplin have ... some sort of
controllable one might be good.   IIRC, from Helen's experience, gettng the
right sort of wire is critical to any sort of longevity ...

Chris

('E61 / T-Mobile W'n'W)


- original message -
Subject:	RE: [ukha_d] Hot knife for HA conduit ...
From:	"Paul Gordon" <paul@xxxxxxx>
Date:		19/09/2007 9:11 am

Could you not "repurpose" a soldering gun, and just fabricate a
suitable
bit to put in it?...

Paul G.


> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Neil Ball
> Sent: 19 September 2007 09:45
> To: UKHA Group
> Subject: RE: [ukha_d] Hot knife for HA conduit ...
>
> Speed is relative, I built using blockwork for all of my walls,
> internal &
> external. Lightweight block was not too bad for cutting back boxes and
> capping cables, dense block was a b*****d! I could only spend weekends
> and
> evenings and it took me nearly a month in all.
>
>
>
> Hot wire approach has its own issues - Helen Pearson used to post on
> the UK
> Selfbuild forums and built a hot wire cutter to cut the roof
insulation
> for
> her build. Her husband was an electronics engineer and spent some time
> perfecting the rig. Even then they suffered a number of wire breaks so
> it
> was not all plain sailing. Might still be some posts in the archive if
> you
> want to try a search.
>
>
>
> Neil B.
>
>
>
>
>
>   _____
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of
> Chris Hunter
> Sent: 18 September 2007 18:36
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Hot knife for HA conduit ...
>
>
>
> Thanks, I had ... US 'sites say some use a 'knife, others a
> router ... but, 'have to say, I was surprised by this ... one of the
> plusses of ICF is speed, and 'would have thought a knife would have
> been quicker, even without talikng into account clean-up time ...
>
> 'looks like we'll have to be a controllable power-supply, some
> formable wire (maybe from Scientific Wire), some screw connectors,
> and some wheels, to make our own device ! Maybe the power supply
> would have other uses ... any thoughts (they don't get mentioned much
> on this forum) ? ! Maybe mains' & a dimmer would be OK, if we were
> careful (ouch) ? !
>
> Chris
>
> On 18 Sep 2007, at 09:17, Neil Ball wrote:

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