Angle Grinder vs Oscillating Multi Tool

[sameerp]

Hi all

Would like some advice on selecting the best tool (and any other tips oc completing the job in the best way are welcome)

Just purchased a house. Previous owners has places Solid wall anchors to hold TV barcket,. Im not able to remove the anchors from the wall. So want to cut them off. Also assume i will need to grind the anchors after the cut to get them below wall level, so i can fill over them.

Im about to invest in a tool to do the job.

Is an angle grinder best for the job? I know it can cut and grind metal.
OR
Could an oscilating multi tool Complete the job just as well. I know they can cut metal, but can they also grind metal?

Considering a multi tool as i feel its likely i would use it more, but first and foremost need to cut, grind the anchors and fill over them

See pic attached.

Get rid of these anchors

• sameerp
• 4 May 2015
• 1

[/img]

 

[Bahco]

Get yourself an angle grinder.

Screwfix have a Bosch one on offer for £35 at the moment.

 

[^woody^]

Have you tried banging them in?

 

[cajar]

Pictures a bit rubbish but have you tried putting mole grips on them and turning them anti clockwise to remove?

 

[sameerp]

I tried
- unscrewing them
- Using grips, but they wpould not turn further than a certain point
- tried spraying some oil down them to see if that would help.
- banging them in. They are threaded so didnt move at all.


Thought about using extractor tool, but they are likely to be at least 150mm to 200mm if not more, so then decided not to go donw that route.

They potrude out of the wall about 10mm to 20mm

 

[RF Lighting]

Post a close up in focus picture of one of the studs. Unless they're chem fix studs there will be a way to remove them.

 

[jasp]

must be a solid wall ..wouldn use anchors or rawl on hollow wall .

once they are in they be hard to get out ..prob do more damage trying to get them out ..just grind the thread off m8 ..then fill I would

 

[sameerp]

Yep. its a solid external wall.

I think they have used something like this
[url]http://www.diy.com/departments/bq-steel-anchor-bolt-l120mm-dia10mm-pack-of-5/253924_BQ.prd [/url]

This is what it looks like

Untitled

• sameerp
• 4 May 2015
• 1

Would a multi tool do to cut and gring these metal bolts?
OR
Will only an axle grinder do the job?
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[ntb]

An angle grinder is what you need. A multi tool with the right blade would cut them (slowly) but it won't grind them. See Bahco's post.

Or for a cheap option that might work, put two nuts on, lock together and twist out with a spanner.

 

[phatboy]

Or for a cheap option that might work, put two nuts on, lock together and twist out with a spanner.

... and a long lever on the spanner to make it easier

 

[jasp]

you could hacksaw it but you might mark the walls mind ,,if they are in right they take some getting out

 

[^woody^]

A grinder would be slipping or grinding the wall too. You wont see this with all the sparks and dust flying around the front room

A multi tool or a dremmel would be your best bet. Cut slightly on an angle to cut the bar below the surface ready for filling.

Paint over the bar with some gloss paint straight away after and this stops rust stains leeching through the plaster afterwards.

 

[sameerp]

Thanks for all your suggestions guys.

Anything using elbow grease like hacksaw is sadly beyohd me. I cant grip tight and apply force for long periods due to an injury

Thanks NTB - I will try the locking nuts and Spanner idea. Might just do the trick.

Otherwise I think i will attempt the job with the Multi tool.

Thanks Woody - for the tip about painting the bars with gloss. I didnt think that far ahead and would have missed the rust issue.

 

[sameerp]

Thanks all for your advice.

Final Solution i chose - Dremel tool

The oscillating multi tools were expensive, and also blades were pricey too. And as they couldnt grind, i rules them out.

The Angle grinder, while would do the job, thought would make a larger mess of the wall and most importantl i would have less use for it in the future

The Dremel Tool is a Rotating Multi Tool. Used for for delicate hobbyist tasks as well as ligtt diy, the Dremel 3000 Vut through the bolts very well. I use the speed click cutting discs, they wer every affective. The grindstone bits to grind down the final bits below the surface.
Took about 40mins to cut all 5 and grind them down. Maybe a bit longer than an angle grinder, but worked very well.
Sealed Bolts with Nail varnish to protect against rust.
Fill, sand, paint, and job done.

Pic before filling and sanding

Anchors gone

• sameerp
• 14 May 2015
• 1