New, incompetent, advice-needy

[Stephen Eley]

Hi, I am a (very) amateur woodworker, and I anticipate that most of my posts will be pleas for help! My current project, for example, is to fit bull nose oak skirting around the inside of an octagonal conservatory, and calculating the mitre angles!

 

[Stigmorgan]

Welcome to the asylum
I'm sure someone will be along soon that can explain how to do the angles better than I can

 

[Peter Sefton]

Welcome to the forum, in theory each internal angle should be 135 degrees so divided by 2 gives you cuts of 67.5 degrees, but my feeling is each will be slightly different. Maybe this will help.



Cheers

Peter

 

[--Tom--]

Welcome, may be worth looking at scribing rather than mitreing that’s how I did my skirting

 

[Stephen Eley]

Thank you Peter

 

[Stephen Eley]

Tom, is scribing where you hold the profile against one of the pieces at an internal angle and jigsaw the waste off? I can see how to do that at 90 degrees, but not 62.5

 

[Stephen Eley]

Or even 67.5!!

 

[recipio]

Invest in a miter protractor. The aluminum ones like Starrett are pricey but better than the plastic. You can then read the exact cutting angle for the saw on each corner.

 

[HOJ]

What do you have in the way of tools/equipment to cut it with?

 

[Peter Sefton]

I would usually recommend scribing internal mitres for skirting, but given its Oak, a Bullnose and at 135 degrees getting a clean finish could be very tricky.

If your using a mitre saw you can do test cuts on scrap to make sure the saw is set up correctly, being plumb might be the most challenging part if the plasterers haven't been really careful and clean.

Cheers

Peter

 

[ChaiLatte]

being plumb might be the most challenging part

It is also worth measuring just how level the floor is (rather than assuming it is level) and marking the same level at each joint.

 

[--Tom--]

I would usually recommend scribing internal mitres for skirting, but given its Oak, a Bullnose and at 135 degrees getting a clean finish could be very tricky.

If your using a mitre saw you can do test cuts on scrap to make sure the saw is set up correctly, being plumb might be the most challenging part if the plasterers haven't been really careful and clean.

Cheers

Peter

Ah serves me right for not reading the details fully - you’re quite right, best approach is going to be mitred

 

[Woodworker Ireland]

Hi, I am a (very) amateur woodworker, and I anticipate that most of my posts will be pleas for help! My current project, for example, is to fit bull nose oak skirting around the inside of an octagonal conservatory, and calculating the mitre angles!

Quick way. Get 2 scrap pies od wood anything really. Keep bevelling then at different angles untill you get a neat tight joint. Then take note of bevel angles on mitte saw if your using one any you should be good. By the way every wall angle can be different so check each time.

 

[John Hall]

The conservatory may be octagonal to look at, but I would check the angle of each corner before you make any cuts…
Get two plain pieces of card 6”x4” (imperial ) put one flat on the floor along one side up to a corner…place the other on top of it along the adjacent side into the same corner…join the two pieces with strips of cello tape
You’ve now got a template for the angle….which you can use to check if they are all the same..
If they’re not all the same you can use that method for each corner and half it..
Good luck…