How to draw a circle at an obtuse angle?

I need to make a ring which has 3 holes in it, coming off at 120 degree angles.

The initial one was easy as I just drew a circle on the red axis and extruded it through the ring.. But I have now realised I don’t have a clue how to handle drawings, specifically circles at off angles.

I assumed I could draw a line in space, and then place a circle at the end of the line.. But when I do this, its at some kind of weird angle.

I guess the same question would be, if I drew a random line.. How can I draw a circle on the end of it which is perpendicular to the line?

Use Pie tool.

Assuming the ring is solid group or component draw the circle starting at the center of the axis, push pull through the ring, make a group, then rotate the cylinder where you need it. You can use solid tools to subtract the cylinder from the ring.

Tried the pie tool, but I still couldn’t get it to match the orientation of the line…

Have you searched YouTube for any tutorials to learn how to use the Pie tool?

https://www.youtube.com/results?search_query=Pie+tool+sketchup

Thanks bmike.. Not really clear what you are saying.. Even if I draw a line in space, I can’t work out how to make a circle that matches the ‘axis’ of the line.

In the end I worked around this by making the hole at 0 degrees, and then rotating 2 copies of it (120 degrees each time) and placing them on the original.. This gave me exactly what I wanted.. But was surprised I could draw a circle “off angle”.

You really can’t easily. This is what I suggested:

Easiest in my experience with circles to draw from the origin, but if you want to get fussy and fancy you can place the axis:

Another way using standard tools without plugins. This may help those using the Web version.

See this SU file.

Ring with holes.skp (258.1 KB)

With the pie tool, instead of just clicking for the center point, click and drag along the line to make the plane of drawing perpendicular to the line.

That was the solution.. The Pie Tool works perfectly.. Thanks RTCool.and everyone else who gave input.

Dare I point out that @mihai.s posted a vid showing that.

I have to say @Box is the one who I learned that from.

True. I guess I just put it in words.

I very nearly did too, but then thought I would do a vid, checked Mihai’ vid and decided against it.
Unfortunately the reality is sometime words mean more than pictures and vise versa.
It can be very difficult to provide the most appropriate tutorial for each person. We do our best.

Sorry all for crediting the wrong post… I thought RTCool was the person who originally said “use the Pie Tool”.. I didn’t realise it was Mihai and worse still he took the time to make a video. I read from he bottom up and what RTCool wrote clicked in my head and it worked, so I didn’t read further up the thread.

Thanks to everyone for their help.. Trying to make off-angle circles has always bothered me, so this has been a great help..