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4 x 6 bandsaw hydrolic feed

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  • 4 x 6 bandsaw hydrolic feed

    Well gang, not alot of welding to this project. Will, Aaron and I got together at my home today and figured out the plumbing and bracketing for the Cylinders and pop off valve that Will tracked down for us.

    I am pretty happy with the results of the feed on this. Its as slow as you want it to get and very smooth. The pop off valve allows you to just lift the cylinder off after the cut is finished without changing your feed speed settings. Will...great job on tracking all this stuff down.

    Here is the first pic.
    Short Term Memory GONE!!
    Hobby Weldor/Machinist
    Photobucket Shop Pics

  • #2
    another pic
    Short Term Memory GONE!!
    Hobby Weldor/Machinist
    Photobucket Shop Pics

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    • #3
      this is the front mounting bracket
      Short Term Memory GONE!!
      Hobby Weldor/Machinist
      Photobucket Shop Pics

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      • #4
        The back clevis
        Short Term Memory GONE!!
        Hobby Weldor/Machinist
        Photobucket Shop Pics

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        • #5
          This is really handy. You can shut down the cylinder just above your work so you can align your cut marks with the saw blade. Another time saver


          have a great weekend all

          Bob
          Short Term Memory GONE!!
          Hobby Weldor/Machinist
          Photobucket Shop Pics

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          • #6
            Just to let everyone know the specifics....we used a cylinder with 1.25 bore and 8 inch stroke. Now that Bob's design is complete, it looks like we could get by with a 5 -6 inch stroke on the cylinder. You can find cylinders like these on Ebay for less than $10. The control comes from a hydraulic poppet valve that free flows in one direction and has a needle valve for control when the flow is in the opposite direction. Again, found these on Ebay at less than $10. Add a few fittings, tubing and oil and you have a controlled feed for your bandsaw for about $25. If you mount it in place of the tension spring assembly as Bob did, the mountiing brackets are easy to fabricate. The toughest part is getting the oil in and all the air out!

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            • #7
              Good work fellas. I just unpacked and assembled my HF 4x6 bandsaw last night.

              Anymore specs info about how the hydraulic stuff works? I know as much about hydrolics and i do about sewing

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              • #8
                Originally posted by Will
                Just to let everyone know the specifics....we used a cylinder with 1.25 bore and 8 inch stroke. Now that Bob's design is complete, it looks like we could get by with a 5 -6 inch stroke on the cylinder. You can find cylinders like these on Ebay for less than $10. The control comes from a hydraulic poppet valve that free flows in one direction and has a needle valve for control when the flow is in the opposite direction. Again, found these on Ebay at less than $10. Add a few fittings, tubing and oil and you have a controlled feed for your bandsaw for about $25. If you mount it in place of the tension spring assembly as Bob did, the mountiing brackets are easy to fabricate. The toughest part is getting the oil in and all the air out!
                Thanks Will, I should have included that also...
                Short Term Memory GONE!!
                Hobby Weldor/Machinist
                Photobucket Shop Pics

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                • #9
                  Bobby,
                  The cylinder has a piston inside that is moved by the rod. Each side of the piston is filled with oil and there is a tubing connection between the two sides of the piston that goes through the poppet valve. This valve provides a variable restriction in the line to control the oil flow from one side of the piston to the other side. The more you pinch the valve closed, the slower the saw goes down. In the reverse direction (lifting the saw), a one way valve (check valve) that is built into the poppet valve opens to allow you to lift the saw without restriction. There aren't any other connections to a pump or anything like that.

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                  • #10
                    Originally posted by Will
                    Just to let everyone know the specifics....we used a cylinder with 1.25 bore and 8 inch stroke. Now that Bob's design is complete, it looks like we could get by with a 5 -6 inch stroke on the cylinder. You can find cylinders like these on Ebay for less than $10. The control comes from a hydraulic poppet valve that free flows in one direction and has a needle valve for control when the flow is in the opposite direction. Again, found these on Ebay at less than $10. Add a few fittings, tubing and oil and you have a controlled feed for your bandsaw for about $25. If you mount it in place of the tension spring assembly as Bob did, the mountiing brackets are easy to fabricate. The toughest part is getting the oil in and all the air out!
                    Will, I pretty much have the system down to getting all the air out. I am still let with just a minor amount of air in system. I have that figured out and am going to get to that this evening along with reinforcing the bracket at the front of the saw (it flex's slightly and is bugging me ). If you and Aaron want to come over for a bit this eve I will be out in the garage working.

                    Bob
                    Last edited by deere_x475guy; 01-28-2003, 11:13 AM.
                    Short Term Memory GONE!!
                    Hobby Weldor/Machinist
                    Photobucket Shop Pics

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                    • #11
                      What search words on ebay would I start with:

                      1) for the cylinder?
                      2) for the valve that controls the feed rate?
                      You hammer the iron that lay on your anvil, instead of daydreaming of working silver.

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                      • #12
                        is this something that could be used?

                        http://cgi.ebay.com/Hydraulic-Cylind...QQcmdZViewItem
                        Ed Conley
                        Screaming Broccoli, Inc
                        http://www.screamingbroccoli.net/
                        MM252
                        MM211
                        Miller Passport Plus, Spoolmate 100
                        TA185
                        SO 2020 Bender
                        Miller 125c Plasma
                        "Hold my beer while I try this!"

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                        • #13
                          Broccoli, I hope you're not asking me! But I see that they have more than one for sale... So if someone knows -- Chime in!!
                          You hammer the iron that lay on your anvil, instead of daydreaming of working silver.

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                          • #14
                            It's certainly more than heavy enough, You will still need the valves and fittings.
                            Dennis


                            Thermal Arc 185-TSW
                            Millermatic Challenger 172
                            VictorO/A
                            Atlas Craftsman 12 by 24 Lathe
                            Esab PCM-875
                            Wholesale Tool Mill-Drill

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                            • #15
                              I was asking for ya

                              http://cgi.ebay.com/2-PARKER-MINI-BR...QQcmdZViewItem


                              More stuff I have no idea about
                              Ed Conley
                              Screaming Broccoli, Inc
                              http://www.screamingbroccoli.net/
                              MM252
                              MM211
                              Miller Passport Plus, Spoolmate 100
                              TA185
                              SO 2020 Bender
                              Miller 125c Plasma
                              "Hold my beer while I try this!"

                              Comment

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