Drilling holes in XT8 Dob
Posted 13 January 2013 - 07:52 PM
Posted 13 January 2013 - 10:12 PM
The knob also helped my instantly visualize how to move my scope to track objects. When I grab the knob when looking through the scope, I imaging I'm reaching into what I'm viewing, and grabbing the star or planet, and that I'm dragging it around. As soon as I realized that, I could track everything quite easily. Before that, I'd frequently go the wrong way.
Posted 13 January 2013 - 11:07 PM
Holding the block of wood on the inside of the tube gave some support when doing a light tap do set the point before begining the drilling.
Posted 14 January 2013 - 08:13 AM
Posted 14 January 2013 - 09:36 AM
I have the same XT8. After reading this. I am going to put a knob on my tube as well. Hope your drilling goes smooth.
Posted 14 January 2013 - 10:20 AM
Posted 14 January 2013 - 02:19 PM
Posted 14 January 2013 - 03:28 PM
Posted 15 January 2013 - 06:09 PM
Posted 18 January 2013 - 06:42 AM
I installed the same knob last night. I attached some pictures and hopefully this helps anyone thinking of doing the same.
The first step was removing the band across the top of the tube. This is held in place with some phillips head screws. Next I removed the tube from the bas and set the tube open end down on a couch (My wife was not crazy about this idea!) I used electrical tape on both sides where I was going to drill and started with the smallest drill bit I have.
Posted 18 January 2013 - 06:52 AM
Posted 18 January 2013 - 07:00 AM
Posted 18 January 2013 - 10:45 AM
Good job on the knob
Posted 18 January 2013 - 10:49 AM
Posted 18 January 2013 - 12:04 PM
I was wondering how best to (if I dare) drill a hole in my XT8 OTA....would like to put on one of those rubber navigation knobs on the top end (like the ones that come with the Intelliscopes and even on the XT4.5). Not sure why they left them off the classic models. I find that grabbing the tube isn't the best method. Think the knob would simplify things. I have visions of starting the drill bit and having it SLIP and oops....one nasty scratch on the OTA. One cant really expect to use a centre punch to start the hole. Anyone got any fool proof methods up their sleeve? thanks, Clare
Be careful, its a slippery slope. Yea, it all starts out with a drill bit; before you know it, you'll be using chain saws and arc welders...........
To be truthful, I use that knob maybe 30% of the time. Usually AFTER i've gotten the object in the FOV for nudging.
Posted 20 January 2013 - 06:55 PM
I was nervous about this but fortunate to have an experienced friend from my astro club help me out.
Posted 01 February 2013 - 08:19 PM
Posted 01 February 2013 - 08:22 PM
I got up the nerve today to drill the 1/4" hole in the OTA of my XT8. Masking tape; made up a jig, and started with a very small drill bit; and moved slowly upwards until I ended up with 1/4". The OTA was surpisingly tough to drill through; (either that or my drill bits were very dull..lol). Pointed it downward to avoid filings inside; removed the outer trim ring and did the deed. The finished product is great; now all I need is clear skies...! Thanks, Clare
I agree it was tough I thought as well. I had a pretty sharp bit. The handle is really nice I find myself using it all the time. Glad you got the hole drilled.
Posted 01 February 2013 - 08:23 PM
Posted 01 February 2013 - 11:40 PM
Posted 02 February 2013 - 04:27 PM