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Tube and Dew Shield Dent Removal Tips

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#26 Kasmos

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Posted 19 March 2017 - 01:10 PM

I've been involved with cars and motorcycles for some time so understand what you guys are talking about in regards to metal work. I also have friends that do and or did bodywork and have done a little bit of it myself on my own vehicles. Nothing too complex mind you.  I know there are absolute geniuses that can work metal to perfection with no filler, but even the pros find themselves grinding/smoothing the high spots on repairs before using filler. Keep in mind that most automobile damage is usually a series of complex dents and creases on what many times is complex shaped surface. That said, most of the small dents in a telescope tube probably don't have too much stretching involved and an individual who takes their time can probably get some pretty good results without any special tools. Plus I have a hunch many will be happy just minimizing the damage. All of the repairs I've done so far on the telescope stuff will probably be completely invisible once I did a small amount of sanding before and after using body filler or some spot putty. 

 

I'm kind of joking but there's some truth in this take of a slogan I've heard, "Filler and Paint for what the Craftsman Ain't".

 

Lastly, as on a car, if it's something you can't handle, have someone who can do it. After all you might try fixing your VW Bug or a yard sale find Tasco 60mm yourself, but not your Porsche 911 or Unitron 152.


Edited by Kasmos, 19 March 2017 - 01:13 PM.


#27 starman876

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Posted 19 March 2017 - 01:58 PM

oh I dont know about the Unitron 152. Have fixed a few tubes. However, pipe expanders for a tube that size requires a bit of engineering.  You just stick some hardwood blocks around the pipe expander and ratchet away.  It does work and it goes quick.   



#28 Kasmos

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Posted 19 March 2017 - 04:42 PM

Just saying, generally if someone doesn't have any prior experience or is not handy or confident, they may not want to experiment on a valuable telescope.

 

And yes proper tools make any job easier and go better.

 

I'm sure a pipe expander works great, but since I was working on a $20 telescope's dew shield, a free scope's tube and dew shield, plus a spare tube... like a Youtube Hillbilly I just used what I had. smash.gif

Hopefully I won't need to do it again.  fingerscrossed.gif



#29 starman876

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Posted 19 March 2017 - 06:26 PM

I would say what you did was rather well done.  You found another way to get a dent out of a tube.  



#30 Ben Bajorek

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Posted 20 March 2017 - 08:52 AM

I like the ideal of enlarging the diameter of the tube expander with hardwood blocks.  You could have the  hardwood block under the dent push the dent up by making it a little higher than the rest of the hardwood blocks.  Also a metal collar around the outside of the tube while expanding the inside of the tube might be helpful.



#31 starman876

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Posted 20 March 2017 - 09:15 AM

the hardwood block need to be rounded the same diameter as the tube otherwise they will create creases in the tube. 




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