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Rifles, Reloading, Optics, Equipment
Gunsmithing
Truing an action.
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<blockquote data-quote="J E Custom" data-source="post: 1848114" data-attributes="member: 2736"><p>Lapping has it's place for surface preparation, But it will not correct miss aligned or uneven tolerances. the reason we face the bolt face and square the lugs and abutments is to make them perpindicular to the bore centerline. lapping, use to be a way of increasing the contact area of the bolt lugs. but it does nothing to square the lugs and abutments. They will just have better contact with each other and still be at different heights.</p><p></p><p>If the bolt face were convex or concave (Most of the time they are one of these) lapping would only resurface it and leave the same configuration as before. we machine all the surfaces that mate with other surfaces To square them and align them with the bore centerline. then we Lapp the heavily loaded parts to improve the fit and finish.</p><p></p><p>So if the part/surface is not true, lapping will not correct that.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1848114, member: 2736"] Lapping has it's place for surface preparation, But it will not correct miss aligned or uneven tolerances. the reason we face the bolt face and square the lugs and abutments is to make them perpindicular to the bore centerline. lapping, use to be a way of increasing the contact area of the bolt lugs. but it does nothing to square the lugs and abutments. They will just have better contact with each other and still be at different heights. If the bolt face were convex or concave (Most of the time they are one of these) lapping would only resurface it and leave the same configuration as before. we machine all the surfaces that mate with other surfaces To square them and align them with the bore centerline. then we Lapp the heavily loaded parts to improve the fit and finish. So if the part/surface is not true, lapping will not correct that. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Truing an action.
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