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Forums10
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Apr 27th, 2024
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Joined: Feb 2004
Posts: 13,879 Likes: 15
Sidelock
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Sidelock
Joined: Feb 2004
Posts: 13,879 Likes: 15 |
As Rocketman mentioned earlier, a rubber Cratex abrasive is a very simple and effective way to go. It isn't messy like using wood dowels or aluminum rods, etc., with oil based abrasives (Clover compound). You can see what you're doing much easier.
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Joined: Jul 2008
Posts: 1,008
Sidelock
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Sidelock
Joined: Jul 2008
Posts: 1,008 |
I've done it with a leather disc affixed to a dowel held in a drill press. An X-Y table is needed to get the precise overlapping.
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Joined: Apr 2011
Posts: 1,850
Sidelock
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Sidelock
Joined: Apr 2011
Posts: 1,850 |
Did the leather work gnomon? I've even thought of cutting out small disks of 400 wet/dry and use a cohesive to stick them to a dowel rod.
Practice safe eating. Always use a condiment.
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Joined: Feb 2004
Posts: 13,879 Likes: 15
Sidelock
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Sidelock
Joined: Feb 2004
Posts: 13,879 Likes: 15 |
Too much work JRB.
If you haven't used a Cratex to do it, you're doing it the messy and hard way. They are easily cut with a knife or saw and dressed with a grinding wheel dressing stick quickly to shape or size.
Last edited by Chuck H; 12/12/12 11:54 AM.
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Joined: Dec 2001
Posts: 6,271 Likes: 202
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 6,271 Likes: 202 |
One caveat. Depending on what kind of abraisive you use and if you are using a drill press, it is easy to over do it and make gouges where you just wanted those swirling patterns. At least, my drill press makes it somewhat hard to monitor the down pressure.
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Joined: Mar 2005
Posts: 680
Sidelock
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Sidelock
Joined: Mar 2005
Posts: 680 |
Brownell's sells or used to sell small round steel wire brushes with a stem to fit a drill or mill to jewel with. Worked best with a drill press with a fixture to hold the piece being jeweled.
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Joined: Dec 2002
Posts: 43
Sidelock
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Sidelock
Joined: Dec 2002
Posts: 43 |
The wire brushes provide a better finish on round surfaces. A piece of heat shrink tubing will prevent the brush from flaring to much and still allow the brush to conform to the shape.Cratex rods work well on flat surfaces.
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Joined: Jul 2008
Posts: 1,008
Sidelock
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Sidelock
Joined: Jul 2008
Posts: 1,008 |
Did the leather work gnomon? I've even thought of cutting out small disks of 400 wet/dry and use a cohesive to stick them to a dowel rod. Works very well. I think this is the classic technique. The leather acts as a lap and holds the abrasive. You'll need to do a few test runs so that each pattern is the same intensity but that is a relatively easy skill.
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Joined: Feb 2008
Posts: 518 Likes: 4
Sidelock
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Sidelock
Joined: Feb 2008
Posts: 518 Likes: 4 |
I've used abrasives and brushes, and prefer the brushes. It is very important to have some way to index the piece uniformly as the work progresses. Trying to eyeball is is a recipe for really ugly results.
Methods aside, engine turning that is done on parts that rub (e.g. the bolt in a M12 pump or the sides of the breech block on an O/U are predestined to show signs of wear or even obliteration. You can re-jewel, but it's going to happen all over again. I prefer to do it right the first time and then let tthe normal wear accumulate as a sign of a gun I enjoy using.
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