Can I file it down

[8kids]

Because of the weather I've been keeping busy by stripping down my scope to see how it all works. I've felt that my focuser to be a bit agricultural in use and when I stripped it down I noticed two wear marks made by the axle. Now the flat on the draw tube which the axle runs against isn't flat it's concave, so is it "safe" to flatten it, it should improve the friction and make for a smoother action, I think......or am I wrong?

Gary.

[Steve Ward]

This is well worth a watch , includes focuser tune.

[brantuk]

I think this video on youtube will help you:

[brantuk]

Snap Steve

[Steve Ward]

Whoops , wrong one. Try this one.

[Steve Ward]

Glad it's not just me watching elsewhere :-)

[8kids]

Thanks for the replies, as it happens I did it anyway and it does make a huge difference, much smoother with no "grinding" noises.

Cheers,

Gary.