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knoting solution ok to replace sanding sealer

Discussion in 'Wood / Woodwork / Carpentry' started by janz70, 6 Nov 2014.

  1. janz70

    janz70

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    Hi all I am after some wood finishing advice for pine,

    I am building a fire surround out of pine garden sleepers (non creosote) I have it all sanded down to 120 and its looking quite good so far.

    I have decided to wax but I have read in some places that I should coat it in sanding sealer first to help fill the gaps and smooth surface after sanding

    I have a 3/4 bottle of knotting solution going spare and wondered as they are both shellac based if it would be ok to replace the sanding sealer with the knotting solution as they are more or less the same product and I am after a
    darkish colour anyway.

    John
     
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  3. JobAndKnock

    JobAndKnock

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    The main difference between patent knotting and sanding sealer is, as you say, in the colour of the shellac used to make-up the mixes. Clear sanding sealer is also made from blonde, dewaxed shellac - essential for some finishes - whereas patent knotting may contain some traces of wax
     
  4. janz70

    janz70

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    I presume it being pine and a fire surround that the knots are going to weep so I was going to have to treat them with knotting anyway so would treating it all effect the wax coats going on after using fiddes ruggarbrown.

    Or would it be best just to wax it all no sealer no knotting?
     
  5. geraldthehamster

    geraldthehamster

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    I would just wax it. If you start putting knotting on it it will be all splodgy.

    Cheers
    Richard
     
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  7. janz70

    janz70

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    thats one thing I never understood about knotting solution, how are you supposed to get an even finish if you just put it on the knots ???
     
  8. geraldthehamster

    geraldthehamster

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    It doesn't really stand proud, and you can de-nib it if it does. It's meant to stop resin bleeding through paint.

    Cheers
    Richard
     
  9. janz70

    janz70

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    Paint, that explains it I thought it was for any finish.
     
  10. geraldthehamster

    geraldthehamster

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    I think you can get clear knotting for use under varnish.

    Cheers
    Richard
     
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