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  1. #351
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 4 Hours Ago Has been a member for 4-5 years. Has a total post count of 828. Received thanks 119 times, giving thanks to others 5 times.
    Just how important is this degassing anyway? I stirred my resin vigorously, let it settle for a few minutes, then poured. I didn't even use the "pour through a small hole" technique. There were some bubbles in the resin as poured, but I paddled a bit of lolly stick back and forth to encourage the resin to find its own level, and also to remove bubbles. The few that were left were very easy to deal with once the resin was hard. It's not something that I'm going to spend much time worrying about when I come to epoxy the gantry rail mountings. For reference, that was using 500g resin/250g hardener on a similar size machine.

  2. #352
    Ive not got access to a vacuum pump but I'm not too concerned about it as before I did the two pot mixing and pouring through a hole from about 12" and there were very few bubbles. Those that did form were dealt with by a piece of welding wire (didn't have a cocktail stick at work) which as Neale said also helped it find its level.
    Neil...

    Build log...here

  3. #353
    Cleaned the rails with thinners and used a tack rag to get all rubbish off then put silicone sealant down and put the oiled moat back on. Now waiting for the sealant to go off overnight so I can trim it back inside and then tomorrow am I'll do the epoxy mix and pour. That way it'll have 10 days over Xmas to set!



    Last edited by njhussey; 22-12-2014 at 03:29 PM.
    Neil...

    Build log...here

  4. #354
    Well......epoxy pour is done....triple weighed everything and double checked...

    Leveled the frame on the floor...



    Weighed the epoxy out...



    Weighed the harder out...



    Mixed it in a cut down 2 litre milk carton first...



    Then transfered to a flatter container with a 7mm (ish) hole drilled in a bottom corner with tape over...poured it from a couple of feet high to mix it as it was transferring



    Stirred it some more then poured it in the moat with fingers crossed for no leaks....





    There are a few bubbles but a quick swizz with a lollipop stick and they went. There are a few microscropic bubbles but I'm not too worried about them...





    There are 3 leaks, one from a corner joint on the bridge, and 2 where there must be a gap under the wood. Happy with that as they were stopped with some paper towel and parcel tape.

    You could see the epoxy going across the bridge where it was leveling itself off so it obviously works!

    Clive, I used a flat stirring stick this time
    Last edited by njhussey; 23-12-2014 at 01:07 PM.
    Neil...

    Build log...here

  5. #355
    Nearly all bubbles have gone, leaks have been stopped so now I can stop crawling round on the floor...



    Neil...

    Build log...here

  6. #356
    Clive S's Avatar
    Lives in Marple   Stockport, United Kingdom. Last Activity: 11 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 4-5 years. Has a total post count of 2,046. Received thanks 316 times, giving thanks to others 30 times. Made a monetary donation to the upkeep of the community. Is a beta tester for Machinists Network features.
    Neil Looking good as you know I just flashed the surface with the hot air gun and the small bubbles just disappeared like magic. Happy Xmas. ..Clive

  7. The Following User Says Thank You to Clive S For This Useful Post:


  8. #357
    Quote Originally Posted by Clive S View Post
    Neil Looking good as you know I just flashed the surface with the hot air gun and the small bubbles just disappeared like magic. Happy Xmas. ..Clive
    Clive, I was going to use my blowtorch but there were only a couple of bubbles so i popped them with the lollipop stick, there were so few microscopic ones that I didn't bother....thosse seem to have floated up to the surface and popped over lunchtime.

    Merry Christmas and a Happy New Year to you Clive.
    Neil...

    Build log...here

  9. #358
    Clive S's Avatar
    Lives in Marple   Stockport, United Kingdom. Last Activity: 11 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 4-5 years. Has a total post count of 2,046. Received thanks 316 times, giving thanks to others 30 times. Made a monetary donation to the upkeep of the community. Is a beta tester for Machinists Network features.
    Neil

    Blowtorch as in naked flame!! Hot air gun no naked flame. Happy new year as well. ..Clive

  10. #359
    Quote Originally Posted by Clive S View Post
    Neil

    Blowtorch as in naked flame!! Hot air gun no naked flame. Happy new year as well. ..Clive
    Sorry yes hot air gun.....I still call them blowtorches
    Neil...

    Build log...here

  11. #360
    Hooray ! it's done, the build will speed up now that hurdle is out of the way, looks good and a plus for Reactive Resins
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

  12. The Following User Says Thank You to EddyCurrent For This Useful Post:


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