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Aviation snips

Discussion in 'Fibrous Plastering Discussions' started by GT Cornicer, Sep 10, 2017.

  1. GT Cornicer

    GT Cornicer New Member

    HI all

    I was wandering if anyone knows where I can get a set of left and right aviation snips with smooth blades? Even a Google search kept coming up with serrated blades.

    Also when I run a profile out ready for fibreglassing, should I shellac it within a couple of hours or when the plaster has fully dried?

    I'm cutting the zinc today so any tips to make it smoother, easier are much appreciated. I have done it on a course but I want it to be decent as I'm super fussy!
  2. raggles

    raggles Private Member

    Just take the serrations out with a half round file.
  3. Olican

    Olican Private Member

    Forget google , try 'Ask Jeeves '
  4. superspread

    superspread Private Member

    Shellac straight away
    • Agree Agree x 1
  5. jamesthefirst

    jamesthefirst Private Member

    Are you in the usa?
  6. bobski

    bobski Active Member

  7. GT Cornicer

    GT Cornicer New Member

    No, in West Sussex, England. I got lucky and found some yesterday made by midwest. Which are made in the USA. Haven't tried them out yet as already finished the zinc template.
  8. mikeadams1985

    mikeadams1985 Private Member

    no chance, let it dry as much as possible.
    shellac reacts with water untill its set. if theres anywater on the surface the shellac will flake off easily
    • Funny Funny x 1
  9. mikeadams1985

    mikeadams1985 Private Member

    Have you tried a jigsaw with a metal blade? ditched the snips years ago in favour of jigsaw
  10. GT Cornicer

    GT Cornicer New Member

    Thanks mate. We did it the same day on the course but obviously no time to wait. Will run out a foot of the plaster to make sure I sanded the zinc well enough before I run 3 metres.
  11. GT Cornicer

    GT Cornicer New Member

    No but I will give that a go on the next profile. I take it will need a lot of sanding afterwards?
  12. superspread

    superspread Private Member

    So when you run a mould you don't shellac ready for casting straight away ?? You leave it a day? 2/3 days ?? Rubbish!!

    I've always shellacked straight away , well an hour at least and never had any problems
  13. Wayners

    Wayners Active Member

  14. GT Cornicer

    GT Cornicer New Member

    Just googled the shellac debate and saw this. Doesn't mean it's right I know, but it may be?

    Shellac Liquid sealer (french polish). The traditional sealer for plaster moulds or patterns, being spirit based it is not softened by solvents such as styrene. For plaster reverse moulds it is best applied while the the wet plaster is still warm from casting. Failing this if the cast can't be warmed it should be left to dry before applying the shellac. Not recommended for sealing plaster prior to applying silicone rubber.
  15. mikeadams1985

    mikeadams1985 Private Member

    What i was saying was if theres any water on the surface it will peel, we do shellac after an hour or so as you say but if theres any real dampness when applying on the surface it will peel off..
    im not saying bone dry, just make sure theres no wet spots on the surface...
    • Like Like x 1
  16. superspread

    superspread Private Member

    Why would there be any water or wet spots on a newly run mould ?? The final pass will make sure there's none of that going on
  17. mikeadams1985

    mikeadams1985 Private Member

    If you have to fill any spots afterwards
    sand a bit maybe
    or sometimes a wet mist whilst running gives it a really nice polish but can leave some water on the surface.
    • Like Like x 2
  18. superspread

    superspread Private Member


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