On 29 Jul 2004 at 13:53, Alan Chan wrote: > Tell you what, based on my experience, they aren't stuck (unless they rust, > which is highly unlikely). What happened is these good old babies were so well > assembled, those screwed were tightened just too well (FA lenses aren't so > tight). What it means to you is that you need a set of perfect fit "JIS" > (Japanese standard) screwdrivers. The bad news is, Japanese made NIWA is the > only choice I am aware (here in Canada Pentax use the same style screwdrivers > and blades which they shown me, but those were supplied by Pentax Japan > directly), and can only be purchased from Fargo (but they don't have some blades > now). I have a set of these screwdrivers myself and you may use 1.7, 2 or 2.5mm > blade for the job. If you use some generic or US standard screwdrivers, the > slots will be worn for certain (but you can always buy these screws > (CNL-D2.0x2.5) from Pentax, they are practically the same for all K mount lenses > with slight different head styles). When assemble, light stength threadlock > should be applied (offical one is Threebond 1401 or 1405 clear, also Japanese > made but can be purchased from Fargo).
Using the correct screw driver is very important. Another option that may be available in many places is a Sony "JIS" screw driver which uses an industrial HIOS bit built for mechanized assembly. They are excellent screw-drivers and although not cheap should be available as a Sony spare part and will last you a lifetime. http://www.hios.com/eng/product/bit/bit.html You can see a pic of the sony driver + HIOS bit in this old shot: http://members.ozemail.com.au/~distudio/pentax_nicd_pack/28.jpg Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
