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  1. #341
    Quote Originally Posted by njhussey View Post
    Only managed 1/2 hour on this today but cut the MDF for the moat. Tomorrow I'll glue it together and seal it, thinking of sticking it to the steel with silicone sealant which will also act as a sealant to stop (hopefully) any leaks as I don't want a repeat of last time where despite my best efforts (obviously not good enough) I had leaks at some joins.

    If I can get it together and sealed then I might go for a pour so it starts to set over the weekend. Whatever happens I'll not be rushing this....lesson has been learnt from last time :)

    Here was my effort flashing the heat gun across gets rid of a small bubbles: ..Clive
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  2. The Following User Says Thank You to Clive S For This Useful Post:


  3. #342
    Quote Originally Posted by njhussey View Post
    With the metal strips?
    Well maybe not, this is the thread, also read a few pages earlier; http://www.mycncuk.com/threads/6619-...3914#post63914
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

  4. #343
    Quote Originally Posted by EddyCurrent View Post
    Well maybe not, this is the thread, also read a few pages earlier; http://www.mycncuk.com/threads/6619-...3914#post63914
    Yeah I've read it....my pour went OK apart from a couple of leaks which I cured and me not having the correct ratio. I got no shrinkage and the epoxy was level all round (measured with a straight edge and level) so I'm going to go as I did before. Mine is only 1300mm long so no where near the length of Boyan's which I think is where alot of his problems came from.
    Neil...

    Build log...here

  5. #344
    Finished the moat today, another day of only 1/2 hour to work on the machine. Still ill not be rushing!!!



    Built it with tabs so that I can lift it off and replace it easily after running a bead of sealant under/round it to seal the gaps. Started gluing the mdf with superglue but ended up using no-nails...will put some oil on the MDF first so the epoxy doesnt stick (as much) to it.
    Last edited by njhussey; 19-12-2014 at 04:59 PM.
    Neil...

    Build log...here

  6. #345
    Quote Originally Posted by njhussey View Post
    ...will put some oil on the MDF first so the epoxy doesnt stick (as much) to it.
    Would parcel tape work instead of oil ?

    Taking no chances this time eh !
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

  7. #346
    Yes, i was going to use that...Trouble is there's some oil already on it so the parcel tape won't stick...

    Nope not taking any chances...going to triple check everything!!! ;)
    Neil...

    Build log...here

  8. #347
    Neil I used the Wests System and found it easier to weigh out the two parts with a digital scale rather than by volume and mixing with a flat paddle (strip of ply etc) if this helps. Good luck. ..Clive

  9. #348
    Quote Originally Posted by Clive S View Post
    Neil I used the Wests System and found it easier to weigh out the two parts with a digital scale rather than by volume and mixing with a flat paddle (strip of ply etc) if this helps. Good luck. ..Clive
    Yes the reactive resins is done by weight, twice as much epoxy to harder I seem to remember....will write it down in big numbers so I can't get it wrong!!! I've got some proper mixing sticks this time...
    Neil...

    Build log...here

  10. Do you have access to a vacuum pump? IF so, you can put the well mixed resin in an over sized container and degas that way (a sealed 50 gallon drum can act as a chamber if the pump can handle the volume). That gets rid of pretty much all gas in the resin which will make for a much better pour and no worry over bubbles. The issue is getting access or having a vacuum pump that can handle the volume.

    Michael
    CAD software Shark Pro v10, Also Aspire v9.0
    CAM Software Aspire v9.0, CamBam v1 beta12
    CNC Machine: http://www.mycncuk.com/threads/3661-...Second-machine
    3D printers: 2 x Prusa MK2S soon to be 2.5's and 1 x mini Delta (180 x 180)
    Work with Solid Surfaces, Acrylics, Woods, Foamboard, PLA, ASA, PMMA
    Work Computer: Lenovo D20, K4000, Tesla C2070, 64GB RAM

    www.marino-customs.com

  11. #350
    Or a drum that can take a vacuum .. Clive

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