Comments on: Gravity press & 4 T problem http://vandercookpress.info/vanderblog/2009/05/gravity-press-4-t-problem/?utm_source=rss&utm_medium=rss&utm_campaign=gravity-press-4-t-problem A forum for all brands of flatbed cylinder proof presses Wed, 23 May 2012 01:56:00 +0000 hourly 1 By: Paul Moxon, Moderator http://vandercookpress.info/vanderblog/2009/05/gravity-press-4-t-problem/comment-page-1/#comment-2231 Paul Moxon, Moderator Tue, 19 May 2009 21:50:17 +0000 http://vandercookpress.info/vanderblog/?p=1645#comment-2231 I trust that you intend to have .050" removed allowing you to use a galley or a bed plate. Additionally, make sure that the under rails are also in good condition and mill if needed by taking off the bare minimum. However, all this effort may not be necessary if you intend to primarily use photopolymer plates. A solid, machined base will greatly mitigate the dishing, but you can also add an underlay beneath the base (copy paper is .004). I trust that you intend to have .050″ removed allowing you to use a galley or a bed plate. Additionally, make sure that the under rails are also in good condition and mill if needed by taking off the bare minimum.

However, all this effort may not be necessary if you intend to primarily use photopolymer plates. A solid, machined base will greatly mitigate the dishing, but you can also add an underlay beneath the base (copy paper is .004).

]]> By: Paul Moxon, Moderator http://vandercookpress.info/vanderblog/2009/05/gravity-press-4-t-problem/comment-page-1/#comment-2230 Paul Moxon, Moderator Tue, 19 May 2009 21:02:13 +0000 http://vandercookpress.info/vanderblog/?p=1645#comment-2230 Removing the carriage is not difficult, but it is very heavy. 1) Conscript two strong friends to help. 2) Place a sturdy table at the end of the press end where the carriage will eventually rest. Build up large support blocks on top of table to it make same height as bed but narrow enough to allow carriage bearings and cylinder trip rack to over-hang. 3) Remove the top frame oscillating roller and bottom frame form rollers. 4) Remove the two bumper springs mounted on the under rails. 5) Roll the carriage to the end of the gear rack and make a mark on the side of the teeth of the cylinder gear just before is about to come off the rack. Use mark to align gear teeth when reinstalling carriage. 6) With the aid of your two strong friends slide the carriage from the bed, then grasping by the tie rods place on a sturdy table at end of bed. Removing the carriage is not difficult, but it is very heavy.

1) Conscript two strong friends to help.

2) Place a sturdy table at the end of the press end where the carriage will eventually rest. Build up large support blocks on top of table to it make same height as bed but narrow enough to allow carriage bearings and cylinder trip rack to over-hang.

3) Remove the top frame oscillating roller and bottom frame form rollers.

4) Remove the two bumper springs mounted on the under rails.

5) Roll the carriage to the end of the gear rack and make a mark on the side of the teeth of the cylinder gear just before is about to come off the rack. Use mark to align gear teeth when reinstalling carriage.

6) With the aid of your two strong friends slide the carriage from the bed, then grasping by the tie rods place on a sturdy table at end of bed.

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