Announcement

Collapse
No announcement yet.

OT: Oil finishing question

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • OT: Oil finishing question

    Question for the finishing gurus here... After a bit of a hiatus I am finally working on the finish on my first speaker project. Pictured is a cosmetic top and bottom panel for the sub. I'm using Watco Danish oil and more or less following these instructions here: http://www.woodcentral.com/bparticles/oil_finishes.pdf. The problem is after five coats I just don't seem to be getting any build-up of the lustre. I don't need a mirror finish but was hoping at least for semi-gloss.

    The material is bamboo, and surface prep consisted of dry-sanding at 120, 240, and 400, and cleaning with a tack cloth. I'm rubbing in the oil with 0000 steel wool. The first two coats were thinned 50% with mineral spirits with further coats being full strength. Oil gets wiped off after no more than 30 min of application. The surface feels very smooth but there is no shine.

    Do I just keep going with it like this or should I be trying something different?

    Click image for larger version

Name:	20140703_201512.jpg
Views:	1
Size:	181.8 KB
ID:	1189463

  • #2
    Re: OT: Oil finishing question

    Watco oil won't develop much lasting gloss or sheen by itself.
    It will slightly enhance what gloss is there, in the wood.
    400 grit should be fine enough to maximize what gloss is available in the bamboo.

    Let it dry a day and apply a final coat without the steel wool.
    Just a light coat should do, don't be too aggressive with the wiping, just get the excess off the surface.

    After another day or two see if it is better.
    It might approach semi-gloss level, more like satin is typical for Watco.

    After a few weeks dry time you can wax to raise the gloss level quite a bit.
    Beeswax and parafin wax will produce a soft semi-gloss glow. Harder waxes like carnuba can bring the gloss up pretty high. Johnsons paste wax will give a little more than semi-gloss typically.

    I can post some wax recipes if you like.
    ~99%
    Make me an angel that flies from Montgomery
    Make me a poster of an old rodeo
    Just give me one thing that I can hold on to
    To believe in this livin' is just a hard way to go

    Comment


    • #3
      Re: OT: Oil finishing question

      Hi Bob, would a coat of wipe on high gloss poly help? I usually coat my finishes with a couple of coat of poly - the thin layer of poly (especially if it is the high gloss type) gives it a quite a shine. The wax then goes on top of it.

      Please post your wax recipes. i too am interested in them

      Regards
      Ani

      Comment


      • #4
        Re: OT: Oil finishing question

        Yes, you can.
        It's important to make sure the oil is dry. Also make sure to wipe off as much oil as possible.
        One coat of oil is usually sufficient if you are going to cover it with a varnish or polyurethane finish.

        Wax tomorrow, too much work tonite.

        Originally posted by ani_101 View Post
        Hi Bob, would a coat of wipe on high gloss poly help? I usually coat my finishes with a couple of coat of poly - the thin layer of poly (especially if it is the high gloss type) gives it a quite a shine. The wax then goes on top of it.

        Please post your wax recipes. i too am interested in them

        Regards
        Ani
        ~99%
        Make me an angel that flies from Montgomery
        Make me a poster of an old rodeo
        Just give me one thing that I can hold on to
        To believe in this livin' is just a hard way to go

        Comment


        • #5
          Re: OT: Oil finishing question

          Formby's high gloss will give a good shine. Don't bother to treat between coats, just keep putting it on. Eventually the shine will build. There comes a point when additional coats start to bead on the surface. When that happens give it a wet sand with 400g and then hit it with a final coat. If you've got plenty of time on your hands you can keep adding coats, sanding when it beads again, eventually ending up with a French polish result if you keep at it long enough.
          www.billfitzmaurice.com
          www.billfitzmaurice.info/forum

          Comment


          • #6
            Re: OT: Oil finishing question

            +1 on the Formby's high gloss. The magic usually occurs on with third coat.

            Bob

            Comment


            • #7
              Re: OT: Oil finishing question

              Originally posted by matt996 View Post
              ...using Watco Danish oil ... after five coats I just don't seem to be getting any build-up of the lustre. I don't need a mirror finish but was hoping at least for semi-gloss.
              You can assemble your own wipe-on blend.

              A good recipe to start with is (in thirds by volume):
              1/3 solvent (eg. odorless mineral spirits)
              1/3 oil (eg. boiled linseed oil)
              1/3 oil based varnish (eg. Epifanes Clear Varnish in high gloss, a spar varnish with phenolic modified alkyd resins)

              If it builds too quickly, use less varnish and more oil. If is doesn't build quickly enough add more varnish to the blend. If too thin use less solvent, too thick use more solvent.

              The solvent can be mineral spirits, odorless mineral spirits, and/or turpentine.

              The oil can be any wood finishing oil that includes a drying agent.

              The varnish can be any oil based varnish, alkyd, spar, urethane.
              "Our Nation’s interests are best served by fostering a peaceful global system comprised
              of interdependent networks of trade, finance, information, law, people and governance."
              - from the October 2007 U.S. Naval capstone doctrine
              A Cooperative Strategy for 21st Century Seapower
              (a lofty notion since removed in the March 2015 revision)

              Comment


              • #8
                Re: OT: Oil finishing question

                I posted some thoughts about wax on my blog.
                ~99%
                Make me an angel that flies from Montgomery
                Make me a poster of an old rodeo
                Just give me one thing that I can hold on to
                To believe in this livin' is just a hard way to go

                Comment


                • #9
                  Re: OT: Oil finishing question

                  Originally posted by bobbarkto View Post
                  I posted some thoughts about wax on my blog.
                  Are you referring to the blog at the link below? If so, something isn't working properly as I am only seeing your initial 2008 post stating that, "This could get interesting."

                  http://techtalk.parts-express.com/bl...?370-bobbarkto
                  "Our Nation’s interests are best served by fostering a peaceful global system comprised
                  of interdependent networks of trade, finance, information, law, people and governance."
                  - from the October 2007 U.S. Naval capstone doctrine
                  A Cooperative Strategy for 21st Century Seapower
                  (a lofty notion since removed in the March 2015 revision)

                  Comment


                  • #10
                    Re: OT: Oil finishing question

                    Thanks for all the replies. I will try doing a light coat without the steel wool. I had been quite thorough will the wiping, and going with the grain -- so maybe I was taking too much off and not leaving enough to build up.

                    Definitely hadn't considered making my own wax, so I'm interested in these recipes. I have a can of the Minwax paste wax that I was using mainly to make the router table less grabby. Actually I was originally just going to wax the bamboo with it too, but wasn't happy with the test piece I tried (in hindsight, probably due to lack of surface preparation).

                    Comment


                    • #11
                      Re: OT: Oil finishing question

                      It should show the post right at the top of that page...

                      Maybe this will work better.
                      http://techtalk.parts-express.com/en...41-Wax-Recipes

                      Originally posted by JRT View Post
                      Are you referring to the blog at the link below? If so, something isn't working properly as I am only seeing your initial 2008 post stating that, "This could get interesting."

                      http://techtalk.parts-express.com/bl...?370-bobbarkto
                      ~99%
                      Make me an angel that flies from Montgomery
                      Make me a poster of an old rodeo
                      Just give me one thing that I can hold on to
                      To believe in this livin' is just a hard way to go

                      Comment


                      • #12
                        Re: OT: Oil finishing question

                        Johnsons is a good wax, no reason to not use it.
                        It is not a high gloss wax, should be about a semi-gloss level on a good surface.

                        I think you'll find that the wax you have will appear glossier on your oiled surface as opposed to bare bamboo/wood.
                        Wax on bare wood can take quite a bit of application to get a decent sheen level.

                        I do think the steel wool was hindering your efforts on the final coat. You do not want the oil to build up on the surface really, just a whisper of oil should remain after wiping.
                        ~99%
                        Make me an angel that flies from Montgomery
                        Make me a poster of an old rodeo
                        Just give me one thing that I can hold on to
                        To believe in this livin' is just a hard way to go

                        Comment


                        • #13
                          Re: OT: Oil finishing question

                          Hmm, the blog links aren't working for me either. It says "invalid blog specified".

                          Comment


                          • #14
                            Re: OT: Oil finishing question

                            Odd, shows up here ok. Logged in or not.
                            ~99%
                            Make me an angel that flies from Montgomery
                            Make me a poster of an old rodeo
                            Just give me one thing that I can hold on to
                            To believe in this livin' is just a hard way to go

                            Comment


                            • #15
                              Re: OT: Oil finishing question

                              Originally posted by bobbarkto View Post
                              Johnsons is a good wax, no reason to not use it.
                              It is not a high gloss wax, should be about a semi-gloss level on a good surface.
                              Would the Minwax I have on hand be comparable to Johnson's?

                              Comment

                              Working...
                              X