screw head snapped off

[luiazazrambo]

Hello *,

I was trying to service my first ever travel watch and during re-assembly I noticed that the head of one screw is missing. I have not removed this screw before it went for cleaning and I have no idea where the head is (not found in the cleaning liquid), not like it matters now. Is there any way to remove the remain of the screw?

Best regards,

Lui

[rogart63]

If you remove every screw from the movement plate you can put it in alum . There is several threads about it on the forum. 

[luiazazrambo]

15 minutes ago, rogart63 said:

If you remove every screw from the movement plate you can put it in alum . There is several threads about it on the forum. 

Thank you. I tried to search first but i was not sure what the methods are. Never heard of alum but I am going to learn about it now.

[Nucejoe]

Will you post a pic of the other side? You may find the other end of screw sticking out so you could grip it. You are going to strip down the movement anyway. Use of penetrating oil always helps unscrew the broken piece, sometimes by a needle or screwdriver, not to mention special removal tools. 

Chemical disolution is the last resorts,  you need to know the plates metal type or alloy to avoid it's distruction by alum.

Regards

[luiazazrambo]

7 hours ago, Nucejoe said:

Will you post a pic of the other side? You may find the other end of screw sticking out so you could grip it. You are going to strip down the movement anyway. Use of penetrating oil always helps unscrew the broken piece, sometimes by a needle or screwdriver, not to mention special removal tools. 

Chemical disolution is the last resorts,  you need to know the plates metal type or alloy to avoid it's distruction by alum.

Regards

It was not sticking out, however I was able to gently push the edge of the remain with a small 0.6 mm screwdriver just by the fraction of a mm at the time. Took about 20 mins but managed to get it out. What a relief.  Thanks for the comment.

[vinn3]

On ‎2‎/‎15‎/‎2019 at 5:58 AM, luiazazrambo said:

Thank you. I tried to search first but i was not sure what the methods are. Never heard of alum but I am going to learn about it now.

   penetrating oil is best.  vin