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- Feb 1, 2015
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Here is the way that I would square up the stock.
1. Face 1" side first
2. Turn 90 deg. and face 1/4" side. If your vise is square you should have two square faces.
3. Place 1/4" faced side down with 1" faced side to fixed jaw
4. Tap in with hammer. A single parallel is all that is required; verify that the parallel is tight. Face upper 1/4" side, measure thickness and reface to desired dimension.Note the position of the z axis as you can use it for the remaining facing
5. Rotate 90 deg., tap in with soft faced hammer to seat the bottom face against the parallels, Check the parallels; they should both be tight. Face the top 1" side to desired dimension.
6. With the end of the piece extended past the vise jaws and 1" side down, mill the 1/4 x 1" face to square it.
7. With the opposite end of the piece extending past the vise jaws, mill the other 1/4 x 1" face to dimension.
You should now have a squared rectangular block
Notes:
1. If you are machining short pieces, less than half the jaw width, you can bias the moveable jaw, giving poor clamping. Place an appropriate spacer on the opposite side to balance the jaw forces.
2. Deburr after each cut with a file or deburring tool.
3.If your hot rolled is severely rounded or out of square on the 1/4" side , it may be preferable to face a 1/4" side first to give a good surface for clamping.
4. Some of the U Tube how to videos show rotating the block 90 deg. (face against fixed jaw and end down) to face the end surface. This does not give you a square end unless you indicate the 1/4" face to square it. That is why I cut the 1/4 x 1" face with the side of the end mill.
5. The oxide coating on hot rolled is very hard and will dull a HHS end mill quickly. Remove it prior to machining by chemical or abrasive means. If using abrasives be sure to carefully clean to remove any traces of abrasive.
6. For irregular faces against the movable jaw, two pieces of copper wire inserted vertically between the piece and the jaw face will give you a reliable clamping
1. Face 1" side first
2. Turn 90 deg. and face 1/4" side. If your vise is square you should have two square faces.
3. Place 1/4" faced side down with 1" faced side to fixed jaw
4. Tap in with hammer. A single parallel is all that is required; verify that the parallel is tight. Face upper 1/4" side, measure thickness and reface to desired dimension.Note the position of the z axis as you can use it for the remaining facing
5. Rotate 90 deg., tap in with soft faced hammer to seat the bottom face against the parallels, Check the parallels; they should both be tight. Face the top 1" side to desired dimension.
6. With the end of the piece extended past the vise jaws and 1" side down, mill the 1/4 x 1" face to square it.
7. With the opposite end of the piece extending past the vise jaws, mill the other 1/4 x 1" face to dimension.
You should now have a squared rectangular block
Notes:
1. If you are machining short pieces, less than half the jaw width, you can bias the moveable jaw, giving poor clamping. Place an appropriate spacer on the opposite side to balance the jaw forces.
2. Deburr after each cut with a file or deburring tool.
3.If your hot rolled is severely rounded or out of square on the 1/4" side , it may be preferable to face a 1/4" side first to give a good surface for clamping.
4. Some of the U Tube how to videos show rotating the block 90 deg. (face against fixed jaw and end down) to face the end surface. This does not give you a square end unless you indicate the 1/4" face to square it. That is why I cut the 1/4 x 1" face with the side of the end mill.
5. The oxide coating on hot rolled is very hard and will dull a HHS end mill quickly. Remove it prior to machining by chemical or abrasive means. If using abrasives be sure to carefully clean to remove any traces of abrasive.
6. For irregular faces against the movable jaw, two pieces of copper wire inserted vertically between the piece and the jaw face will give you a reliable clamping