oakey

Well-Known Member

Full Member

• Nov 19, 2018

• #1

Snapped my allen key inside the allen screw that holds the piston on shaft.
Anyone know a good way of getting it out so I can put a real allen key on it?

 

N

Nickpen

Active Member

• Nov 19, 2018

• #2

depends, can you see any of the snapped off key at all? if its buried inside the bob weight then by the time you've faffed on you'll just end up buying a whole new pump!

 

brianp38dse

Well-Known Member

• Nov 19, 2018

• #3

Can you use a small punch and punch the broken bit back the other way to free it, then pick it out.

 

oakey

Well-Known Member

Full Member

• Nov 19, 2018

• #4

I can see the shiny broken bit in the bob weight but cant reach it

 

wammers

No longer with us, RIP

Donater

• Nov 20, 2018

• #5

oakey said:

I can see the shiny broken bit in the bob weight but cant reach it

Click to expand...

I have never ever in all my days seen an Allen key snap. Bend twist or round off maybe but never snap. The one you used must have been over hardened. What size did you use?

 

T

tomcat59alan

Well-Known Member

• Nov 20, 2018

• #6

wammers said:

I have never ever in all my days seen an Allen key snap. Bend twist or round off maybe but never snap. The one you used must have been over hardened. What size did you use?

Click to expand...

Chinese monkey metal??

 

wammers

No longer with us, RIP

Donater

• Nov 20, 2018

• #7

tomcat59alan said:

Chinese monkey metal??

Click to expand...

Sounds like it Alan.

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

• Nov 20, 2018

• #8

brianp38dse said:

Can you use a small punch and punch the broken bit back the other way to free it, then pick it out.

Click to expand...

Only other option is drill it. Taking the end off should allow you to stop it moving.

 

Datatek

Well-Known Member

• Nov 20, 2018

• #9

Grrrrrr said:

Only other option is drill it. Taking the end off should allow you to stop it moving.

Click to expand...

Need a special drill if the Allen key is glass hard.

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

• Nov 20, 2018

• #10

Datatek said:

Need a special drill if the Allen key is glass hard.

Click to expand...

Cannot think of any other option. Tungsten ones are cheap enough on the bay but nitride coated with a little oil to lube it should be OK.

 

Wazzajnr

Well-Known Member

• Nov 20, 2018

• #11

wammers said:

I have never ever in all my days seen an Allen key snap. Bend twist or round off maybe but never snap. The one you used must have been over hardened. What size did you use?

Click to expand...

Ball ended ones can snap as there is a weak spot. Nornally needs a fair bit of force though.

 

oakey

Well-Known Member

Full Member

• Nov 20, 2018

• #12

Was an 1/8 part and had the wee thin bit at the bottom. Was originally intended for circuit boards I think.
I did use a fair bit of force tho but only by hand