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Message: <blockquote data-quote="mayoayo" data-source="post: 3308982" data-attributes="member: 16781">I use the tape method to create a self threading patch ,increasing the threads size of certain astronomy eyepieces ,after removing the astro barrel,to nikon threads,but these eyepieces are structurally different to the baader zoom...If you remove the astronomy barrel off the baader zoom and attach the tape to the exposed zoom's neck,you might have problems threading it,or even worst,removing it..The neck of the zoom contains the barlow,inserted in a channeled guide.The inner part of this mechanism is attached to the eyepiece body,BUT THE EXTERIOR OF THIS "NECK" ,the part that you are seeing, is in fact a VERY THIN sleeve of aluminum that covers the mechanism.It is simply pushed in and not attached the eyepiece's body..so it can be pulled easily ..if you place tape around that sleeve and and make circular force to "Screw" the eyepiece ,it is possible that the eyepiece would rotate inside the sleeve ,thus not screwing the threads...or it might go in,but rotate inside the sleeve when you try unscrew it,and you could end leavng the sleeve in and pull the eyepiece off..the same can happen with the o-ring pressure fitting method,you might push the eyepiece in,but remember the part held by pressure is a very thin piece of aluminum,and the eyepiece is not attached to it...it can slide out ,and you might ,likely,end pulling the eyepiece off the sleeve at some point..just beware</blockquote>

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