Mitre angles
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Discussion

Purosangue

Original Poster:

2,674 posts

43 months

Wednesday 17th December 2025
quotequote all

any tips appreciated cutting mitre angles for coving around an IKEA Metod corner wall cabinet , what to set angles on cut saw etc

as illustrated 4 mitres

thanks



GiantEnemyCrab

8,002 posts

233 months

Wednesday 17th December 2025
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BlackTails

4,005 posts

85 months

Wednesday 17th December 2025
quotequote all
67.5 degrees. Or 22.5 degrees, depending whether you’re measuring the angle from the rest you’re securing the coving against while you cut or the angle from square cut.

Edited by BlackTails on Wednesday 17th December 06:22

mart 63

2,594 posts

274 months

Wednesday 17th December 2025
quotequote all
Coving angles are difficult to cut, if you haven't got the Coving template. A 90 degree cut is not a straight cut, it's a curved cut. If you cut them straight, you have a lot of filling and it doesn't look good.

Edited by mart 63 on Wednesday 17th December 07:12

loughran

3,265 posts

166 months

Wednesday 17th December 2025
quotequote all
Best to use a mitre box. No need for curved cuts.

https://www.youtube.com/watch?v=DxMCT5L_rMI

paulwirral

3,825 posts

165 months

Wednesday 17th December 2025
quotequote all
There’s a guide to cutting coving and cornice on “ plasterceilingroses “ website without the need for mitre boxes or mitre saws .

Simpo Two

92,879 posts

295 months

Wednesday 17th December 2025
quotequote all
In the OP's case it's either 45 degrees (2x45=90) or 22.5 degrees (2x22.5=45). Then you have to decide f they're internal or external corners.

Just set your saw - I assume you have a mitre saw - as required and use your eyes and brains to work out which way the angle needs to be smile

allegro

1,335 posts

234 months

Wednesday 17th December 2025
quotequote all
This is really a job for a decent quality mitre saw. cutting these by hand is difficult unless you are experienced, which your question suggests otherwise. 2 part mitre glue will help but these joints are not really ones you want a load of polyfiller in unless you intend to paint. would recommend you pay a local joiner the hours wage it would take him/her.

wolfracesonic

9,241 posts

157 months

Wednesday 17th December 2025
quotequote all
Are we talking plaster/gyproc coving here, that goes at the wall/ ceiling junction, or an mfc one that goes around the top of the cabinets?

Inbox

1,337 posts

16 months

Wednesday 17th December 2025
quotequote all
I think getting rid of the cabinet is probably easier...

Mitres in coving are challenging at best for diy as not enough practice.

RGG

1,112 posts

47 months

Wednesday 17th December 2025
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Just a process suggestion -

Use similar cross section pieces of wood to make the initial cut, which will confirm the angle setting of the cutting tool.

This will mean your final coving doesn't get ruined and wasted.

shtu

4,550 posts

176 months

Wednesday 17th December 2025
quotequote all
Apart from the "making sure the saw can cut accurately" setup that is often needed, ie, is 45 degrees on the saw's stop actually correct, the joiner that did mine came with a brand-new, fine toothed blade. I would guess it was at least an 80 tooth one.

Purosangue

Original Poster:

2,674 posts

43 months

Thursday 18th December 2025
quotequote all
The material is a hard Polymer 58mm with channel for mood lighting

I have batons to mount the coving to the units they will have to be sprayed white .I've put coving up before on 90 degree etc but not the angles over the corner unit









Purosangue

Original Poster:

2,674 posts

43 months

Thursday 18th December 2025
quotequote all
i have one of these i used for normal coving




but that would only be good for 90 degree angles ones i used for the lounge


Edited by Purosangue on Thursday 18th December 01:22

The Gauge

7,503 posts

43 months

Thursday 18th December 2025
quotequote all
Are you fitting coving or cornice (to top of wall cupboards)?

I assumed until I saw the photos it would be plaster coving which is very forgiving when cutting angles, but if you're fitting cornice to the top of wall units then the correct angle is more vital (other than using filler).

Simpo Two

92,879 posts

295 months

Thursday 18th December 2025
quotequote all
Purosangue said:
i have one of these i used for normal coving



but that would only be good for 90 degree angles ones i used for the lounge
I see the problem - you have a plastic guide that only does 45 degrees.

Time to get a guide that can do other angles. See https://www.cromwell.co.uk/shop/hand-tools/mitre-b...

wolfracesonic

9,241 posts

157 months

Thursday 18th December 2025
quotequote all
If you have a mitre saw and the back fence is tall enough, you could adapt this method, instead of the proper aluminium blocks, use double sided tape to sticksome timber blocks to the fence.