HI thething84
Thank you so much for your response 😊 .
Yes I realised about 30 seconds after I had placed the post that Googling was probably the way to go, which was why I never bothered to update it.
Plans changed and I no longer need to use poly s for the foreseeable future but will check out Google if required again.
Strange that yours was the one and only reply to date 😭 I was expecting the responses to come flooding in considering how helpful other members of this site have been to me and others in the past.
Perhaps people thought such a subject was not worth responding too.
Anyway thanks again
Kind Regards, John

If you are looking at making one then just do a google, plenty of people made them online. I have made a fixed one using 12v power supply, nichrome wire and a 12v dimmer.