Stripped hex bolts
 

I've just seen you can get tools that help removed stripped screws a d hex bolts. Anyone used them,any recommendations as some are probably too big for small rc screws?

I haven't come across any that are small enough normally
often a Torx type bit slightly larger than hex will work
if it's a countersunk head you can often gently drill head off to reveal stud that you can grasp with pliers
sometimes heating an old hes driver in gas ring off cooker than transferring to striped hex for a good few seconds to transfer heat works then use you best driver to try remove

had good success with MIP drivers as they appear to be top notch quality wise

regards Dave

if they're imperial try a metric driver or vice versa

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

Ive used these in the past. Be careful though as they can be a bit brutal.

Would that bit too big for the small screws we use?

Carefully dremel a slot in the head then use a straight screwdriver bit?

Sometimes when the head is intact but the screw wont' budge, I try to slightly tighten the screw to "crack the thread" and then attempt to unscrew. This has worked many times for me.

That's how I always remove mine...... :thumbsup:

If it's a chassis bolt wont you cut the chassis too?

If the hex head is flush with the chassis then yes unfortunately you will cut the chassis

If you use a small enough disk you should be able to cut a slot without touching the chassis. Just need to take your time when cutting the slot.

If the cutting disk is round and a small enough diameter then the angle of the disk sides should be roughly the same angle as the countersink. You shouldn't then need to damage the chassis.

You could test the theory and practice on a similar screw in a countersunk piece of mdf if you are really worried about chassis damage.

If only one screw is stripped in a given part, then you can remove the other screws and rotate the part.

Otherwise, drilling with a 2.5mm drill bit in the centre of the screw normally destroys the screw. The screw usually disintegrates and comes out with the drill bit.

The dremel slot method does work, but is hard to do without marking the chassis. Best only done for button heads.

i always try a torx bit 1st as they can some times be knocked in with a persuasion stick. can also try to get the bolt as hot as possible with a soldering iron, if its in chassis or cs head i do as dale and drill the head off as last resort.

main thing, good quality drivers
sparing use of loctite on builds and blue not red

Tool
 

There is a tool that I use and it works well, it's a bit like a easy out. You drill a hole in reverse then use the other end in reverse and it comes out like magic.
I will send a pic

Speed out
 

Attachment 121285

These work ver well

Thanks and they are too big?

Tool
 

4 for all sizes, I will do a 3mm screw no problem

Looks like a useful bit of kit

I have used things like this for years, will need to drill a 1.9-2 mm pilot hole first, but they have got me out of some very sticky situations before.

https://www.screwfix.com/p/bolt-extr...5-pieces/1112v

Steve