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Is there wood filler for cast iron? (oops)

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  • Is there wood filler for cast iron? (oops)

    Wanna hear a grown man squeal like a girl? That was me 10 minutes ago.

    Last night I was practicing with my new router circle cutting jig for cutting an arc in 3/4 inch plywood by doing a very shallow cut I'd say 1/4 inch deep only I thought it would be safe to do it on my table saw top.

    All went well until I noticed just now that I carved an arc with the 1/4" straight flute bit. It's probably a 1/8" deep, 2 inch scar. It's just on the edge to the left of my blade so it's not too destructive but it looks horrible !

    Oh my God what do I do what do I do?!?

    * edit, here is a picture *
    Attached Files
    Last edited by Bob R., Ottawa; 12-01-2009, 10:35 PM.
    Why do people keep calling me Rob?

  • #2

    Re: Is there wood filler for cast iron? (oops)

    Re: Is there wood filler for cast iron? (oops)

    Your best bet is an epoxy formulated for metal - J.B. Weld comes to mind. Fill the gash with epoxy, let cure and then sand smooth. Done !

    Comment


    • #3

      Re: Is there wood filler for cast iron? (oops)

      Re: Is there wood filler for cast iron? (oops)

      Hi Bob, sorry to hear about that, i cringed just reading it. I'm not a metalworker but i do know that trying to weld cast iron can be troublesome and may warp you tabletop. I know that "spot putty or bondo" used in the auto industry may work to fill the void left by the router but i don't think it will do much for the look if that is what you are looking for. The bondo will fill the void so that wood getting pushed through the saw won't get hung up on it. Might want to consider filing the sharp edge facing the front of the saw as well to prevent hangups.
      Just my opinion. I'm sure a metalworker like Mike Graham can give you some good advice. Best of luck.
      bill.

      Comment


      • #4

        Re: Is there wood filler for cast iron? (oops)

        Re: Is there wood filler for cast iron? (oops)

        Back in school working in a foundry shop, we used to fill air bubbles and smooth out rough castings with car "Bondo" material. Now they have a new product called "All Metal" that is a better suited product, located at your friendly Auto supply stores.
        Bill "Hickory" Simpson

        Comment


        • #5

          Re: Is there wood filler for cast iron? (oops)

          Re: Is there wood filler for cast iron? (oops)

          J B weld or you could try melting some lead to fill the hole then sand it smooth. Plumbing supply stores may carry it. It has a relatively low melting point. Can remember we collected lead from bullets to melt down in my younger days.Sorry for your misfortune but it happens to us all.

          Brian
          If your dreams don't scare you, you are not dreaming big enough

          Comment


          • #6

            Re: Is there wood filler for cast iron? (oops)

            Re: Is there wood filler for cast iron? (oops)

            Had to say this: lead is *very* posionous (cancer causing substance), especially the vapor from melting it. Use the other methods suggested instead.

            Comment


            • #7

              Re: Is there wood filler for cast iron? (oops)

              Re: Is there wood filler for cast iron? (oops)

              Originally posted by mreza View Post
              Had to say this: lead is *very* posionous (cancer causing substance), especially the vapor from melting it. Use the other methods suggested instead.
              Hmmm .... are you sure you're not thinking of fumes from Mercury? Lead melts quite easily at fairly low temperatures and gives off very little in the way of fumes. With any ventilation at all it would be safe. I melt lead for casting muzzle loader balls and have been doing this for years as do most other black powder shooters. I use lead from old car batteries. Lead is also still present in a major way in solder (lead and tin) and is used in electrical/electronic work for making wiring connections. Lead/Tin solder is sold in most hardware stores.

              cheers

              John

              Comment


              • #8

                Re: Is there wood filler for cast iron? (oops)

                Re: Is there wood filler for cast iron? (oops)

                Another vote for JB Weld. If there is a filler for metal thats it.

                Comment


                • #9

                  Re: Is there wood filler for cast iron? (oops)

                  Re: Is there wood filler for cast iron? (oops)

                  Originally posted by John Bartley View Post
                  Hmmm .... are you sure you're not thinking of fumes from Mercury? Lead melts quite easily at fairly low temperatures and gives off very little in the way of fumes. With any ventilation at all it would be safe. I melt lead for casting muzzle loader balls and have been doing this for years as do most other black powder shooters. I use lead from old car batteries. Lead is also still present in a major way in solder (lead and tin) and is used in electrical/electronic work for making wiring connections. Lead/Tin solder is sold in most hardware stores.

                  cheers

                  John
                  Yes, I'm talking about lead. It's a posionous heavy metal. There are tons of info about its health hazards, just to name a few look here:
                  http://en.wikipedia.org/wiki/Lead
                  or
                  http://www.epa.gov/ttnatw01/hlthef/lead.html

                  One of many ways of exposure is inhaling it. It's a neurotoxin and can damage other organs. Regarding causing cancer, some research suggest it causes (kidney/lung cancer) and some others don't show it.

                  True, it is still used in soldering but not all of them (many are lead-free) mainly because of the danger it causes when it goes to our body.
                  When I was a kid I used to go to auto-repair shops and get the left-over lead used in balancing wheels, melt and cast them into shapes. What a dangerous hobby!

                  cheers!

                  Comment


                  • #10

                    Re: Is there wood filler for cast iron? (oops)

                    Re: Is there wood filler for cast iron? (oops)

                    You might want to look at this product from Loctite Fixmaster Steel Putty is a non-slumping, two-part, steel-filled putty. Ideally suited for rebuilding steel surfaces. Can be machined when cured. I have seen it used in rebuilds on metal surfaces. Worked great. I would talk to a machine shop see what they suggest.

                    Comment


                    • #11

                      Re: Is there wood filler for cast iron? (oops)

                      Re: Is there wood filler for cast iron? (oops)

                      I'm all for the cream that bonds into something hard approach. I'm not so keen on the melting or welding metal options because I don't have the experience or equipment other than a blow torch. Something hard to fill in the hole is good for me as long as the material doesn't get carried away when I put a cast iron cleaning solution or rust cleaner on it. I'd hate for the putty spot to get wet and wipe out.

                      I think my router depth stop either got knocked back out of lock or I just didn't set it as firmly as I should have. Horrible.
                      Why do people keep calling me Rob?

                      Comment


                      • #12

                        Re: Is there wood filler for cast iron? (oops)

                        Re: Is there wood filler for cast iron? (oops)

                        I wouldn't try to fill the gash with metal (any kind) as the top would have to be heated to have the metal flow and hold onto it.
                        Just dripping tin brass etc onto the top would give you a loose filling, it wont hold onto it, and heating the cast top will make it warp guaranteed.
                        JB weld would be my suggestion, next to a good excuse to GET A NEW SAW
                        sigpic
                        Have fun and take care
                        Leo Van Der Loo

                        Comment


                        • #13

                          Re: Is there wood filler for cast iron? (oops)

                          Re: Is there wood filler for cast iron? (oops)

                          Smooth the edges, polish it and paint the scratch Black so it stands out. Make it look like a design feature for a jig!
                          Egon
                          from
                          The South Shore, Nova Scotia

                          Comment


                          • #14

                            Re: Is there wood filler for cast iron? (oops)

                            Re: Is there wood filler for cast iron? (oops)

                            Oh man, I need to see pictures... Many years ago, I did almost the same thing, but mine was resting on my garage floor. I cut a nice circle in the concrete floor that I walked over for 2 years before we sold the place. What an epic brain fart, but a great reminder to check the depth stop
                            Isn't is amazing what those routers will cut through! I don't even remember my bit being damaged...
                            Cheers,
                            SPCHT

                            Comment


                            • #15

                              Re: Is there wood filler for cast iron? (oops)

                              Re: Is there wood filler for cast iron? (oops)

                              Picture added in the first posting.
                              Why do people keep calling me Rob?

                              Comment

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