Here's some additional links about workbenches, materials, heights, etc. Hope that they help.
http://leatherworker.net/forum/index.php?showtopic=7316&hl=
http://leatherworker.net/forum/index.php?showtopic=11770&st=0&p=82514&hl=workbench&fromsearch=1entry82514
http://leatherworker.net/forum/index.php?showtopic=19365&st=0&p=125957&hl=workbench&fromsearch=1entry125957
http://leatherworker.net/forum/index.php?showtopic=22687&st=0&p=145195&hl=workbench&fromsearch=1entry145195
http://leatherworker.net/forum/index.php?showtopic=12317&st=0&p=13088&hl=workbench&fromsearch=1entry13088
http://leatherworker.net/forum/index.php?showtopic=22394&st=0&p=143563&hl=workbench&fromsearch=1entry143563
Regards,
Ben