Sheared Screws

mto

I have a Britannia Range cooker with electric oven, and in the process of trying to clean the oven door, we've managed to shear off two screw heads which were holding a sheet of Thermovit thermo-reflective glass.

Although it doesn't look like it from the photo, the remaining threads are actually below the level of the surrounding frame. The door itself is a sealed unit and can't be taken apart.

Has anyone got any ideas how we can either
a) get these screws out, or
b) affix the glass to the door some other way - can you get heat resistant glue?




If possible we don't want to have to buy a new oven door.

Thanks
mto

Lorian

Drill a whole in the screws and use an extractor of the right size like this, if you can get one small enough:

http://www.mtmc.co.uk/prodtype.asp?cookiecheck=yes&PT_ID=12710227&strPageHistory=cat

Or you could drill the screws out altogether if you are careful. It might require a slightly larger replacement screw to be used. (wearing safety glasses a must for this activity).

Glue is not a good idea, I think the glass should be allowed to move a little as it heats up and cools down or it could crack.

I won't ask how you did it.....:rolleyes:

mto

Lorian wrote: »

Drill a whole in the screws and use an extractor of the right size like this, if you can get one small enough

I've had a ring around local DIY stores and they don't do one small enough. The screw is 4mm diameter and the smallest extractor is 3mm, so looks like we're going to have to try and drill it out.

I won't ask how you did it.....:rolleyes:

It was Mr mto that did it, not me

heretohelp

depending on how tight the screw is fixed if you super glue a penny or something to the screw thread you should be able to unscrew the screw.

Labman_2

mto wrote: »

It was Mr mto that did it, not me

....please ask Mr mto what he was using....ours needs cleaning & I would like to avoid Mrs Labman's wrath!

iamcornholio

If you can't get any extractors, then just drill the whole screw out and fit a slightly bigger self-tapping screw into the [wider] hole.

You can get some heat resistant mastic from www.screwfix.com product code 13185, but if the glass is designed for screw fixings, then that is what should be used

mopsey

heretohelp wrote: »

depending on how tight the screw is fixed if you super glue a penny or something to the screw thread you should be able to unscrew the screw.

Here to help? Is that an oxymoron?

This is a cry for help mate. There's no need for stupid replies like that.

Now, short of trying to create a groove along the top of the screw to get a screw driver in which will damage the door anyway, your buying a new one.
Sorry

mto

Labman wrote: »

....please ask Mr mto what he was using....ours needs cleaning & I would like to avoid Mrs Labman's wrath!

Mr mto was dismantling it, and I was cleaning it using good old elbow grease.

Labman_2

mto wrote: »

Mr mto was dismantling it, and I was cleaning it using good old elbow grease.

....I guess I'm going to be cleaning it in situ. then! Thanks!

amarg

If you are going to try and drill it out I would definately use a pillar drill and a good quality small metal drill. Clamp the door in the exact right position as drilling out a screw is very difficult as they are tough!

You might find that when you get so far into the screw the drill bit will bite and push the screw out the other end.

Lorian

amarg wrote: »

If you are going to try and drill it out I would definately use a pillar drill and a good quality small metal drill. Clamp the door in the exact right position as drilling out a screw is very difficult as they are tough!

This is sound advice. If the OP or the OP OH are not confident with a drill then they should find someone who is.

amarg wrote:

You might find that when you get so far into the screw the drill bit will bite and push the screw out the other end.

Indeed, which in this case means it'll fall inside the door cavity, but this won't cause any side effects, and should not be noticeable in normal use of the door.

The suggestion to buy a new door should be posted on www.moneywastingexpert.com!

Is still can't see how he managed to break them.