Mitre angles
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Discussion

Purosangue

Original Poster:

1,851 posts

35 months

Wednesday 17th December 2025
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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

7,919 posts

225 months

Wednesday 17th December 2025
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BlackTails

2,467 posts

77 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

2,347 posts

266 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

3,167 posts

158 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

3,725 posts

157 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

91,024 posts

287 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

1,279 posts

226 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

8,779 posts

149 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

8 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

1,008 posts

39 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

4,099 posts

168 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:

1,851 posts

35 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:

1,851 posts

35 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

6,227 posts

35 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

91,024 posts

287 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

8,779 posts

149 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.