Thread: Mods to 8" dob
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Old 29-05-2007, 10:33 AM
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Tannehill
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Join Date: Mar 2007
Location: Tucson, before that Wisconsin, before that Melbourne, etc etc.
Posts: 231
Mods to Dobs

Eric,

Congratulations! Glad the cutting technique worked.

I ended up knuckling under and gave my board and Ebony Star to the laminate store and they are doing it for me. Probably better for me, since I'm a bit clumsy with anything sharp and electrified...For glueing and edge routing and routing out the holes (for mounting the side and front boards and for the center bolt) they are charging me (no more than, he said) $70. I provided the Ebony Star, which I had bought from the same store weeks back. Total cost then is $100. (If anyone is interested it is Ringwood Kitchens 9870 6064 on Maroondah Hwy, ask for Graham or Greg.)

You noted the az motion to be still a bit resistive. My first mod, I had re-tightened the center bolt too much, and it took me an hour to realize that. Duh. I think the Az motion should improve with time, as the Teflon and Ebony star work in. I'm still seeing small flakes of Teflon appear on my bearing and the ground, as the TEflon works in, and the motion is getting better on it's own. Armour All in the meantime...

Like you, I also noted the change in presentation of the teflon pad on the bearing when I went with the thicker pads. I ended up shimming one end (the "lower" end) of each teflon pad with small strips of milk jug so it matched the radius of the bearing better. And bevelling off the edges to prevent the sharp edge of the pad from digging into the bearing surface. I use key rings to lengthen the tension spring a bit.

Looking forward to seeing your scope sometime under the clear dark sky. Weather isn't looking too cooperative anytime soon, tho...

Scott
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