Dremel type bits

[Dennis RaynerParticipant @dennisrayner52782]

[Dennis RaynerParticipant @dennisrayner52782]

I am trying to remove the heads of some C/S 3mm woodscrews which have rusted in to aluminium rail. None of my burrs/stones will touch it – they just get ground away in the C/S screw head. I can't get to the other end of the screws.

I wondered if anybody has used a particular brand of Dremel type bits and can recommend them.

[Ian PParticipant @ianp]

Not sure what C/S 3mm screws are but you could try cutting a slot with a reduced diameter Dremel grinding disk, (if the screw head is proud then no need to reduce the disc diameter).

If the woodscrew is long and has been undisturbed for a long time even a perfect slot and well fitting screwdriver blade may not work and just shear off.

Ian P

[Frances IoMParticipant @francesiom58905]

one common approach is to place a redhot bit on the top of the screw – the sudden heat can break the rust or corrosion – for large heads you may be able to freeze the head using the specialised (+ expensive) sprays.

[noel shelleyParticipant @noelshelley55608]

Hammering using a punch on the head to breakup the rust and alli corrosion then try as has been said to slot the head. The important thing with small mounted points or disc is to run them at the correct speed, too slow and they will not work well. If it has a pozidrive head and there is enough of the drive left there is a special tool to get them out. Good Luck. Noel.

[old martParticipant @oldmart]

I bought a box of diamond burrs at Lidl the other week which will fit most of the dremel or clones. They would definitely remove the heads, no matter how hard they are.

[Trevor Drabble 1Participant @trevordrabble1]

When I had a similar problem ( fortunately just before the Midland Show ) I bought a load of miniature end cutting solid carbide bits from Jenny of JB Cutting tools and they worked a treat . No connection to company .

[OldironParticipant @oldiron]

Best to use carbide burrs. They will remove the heads ok.

regards

[duncan webster 1Participant @duncanwebster1]

Have you tried heat and an impact driver?

[Mark RandParticipant @markrand96270]

Make sure that the Dremmel is working at the maximum possible speed. You need to be throwing off sparks.

All grinding wheels act soft when run too slowly.

[Dennis RaynerParticipant @dennisrayner52782]

Finally an update _ I didn't fully describe the situation with the screwheads but suffice to say that removing the fairly inaccessible heads was the optimum solution. I purchased a set of diamond tipped burrs over the internet. I had to overcome the problem that these unbranded burrs didn't fit the collets of my Dremel lookalike but, having solved that problem, the head removal (de-capitation?) was achieved!

Thank for all the suggestions.

[Grizzly bearParticipant @grizzlybear]

Hi Dennis,

Thanks for the feedback.

Can you post a link to your diamond tipped burrs?

Bear…………..

[Dennis RaynerParticipant @dennisrayner52782]

Hi Grizzly – as requested…….

https://www.amazon.co.uk/gp/product/B07BMXF3G7/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1 Bought on Amazon for £7.99

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