Snap on 45 degree points

Use this forum to ask questions about how to do things in QCAD.

Moderator: andrew

Forum rules
Always indicate Operating system, QCAD version
Attach Drawing files, Screenshots
Post one question per topic.
Post Reply
ljbuller
Active Member
Posts: 25
Joined: Mon Jun 19, 2017 1:52 am

Snap on 45 degree points

Post by ljbuller » Mon Apr 01, 2019 3:15 am

Is there a way to snap on the 45 degree points around a circle?
If I create a line that I want to go from the 225 degree point to the 45 degree point on a circle for instance. Or I have an Instrument with a 3.5" bolt circle diameter and I want to place screw holes on the 45 degree points on that circle.
I see the reference SR snap for 0, 90,180, 270. Is there something similar for 45 degree points or a setting for that snap tool?

User avatar
Husky
Moderator/Drawing Help/Testing
Posts: 2579
Joined: Wed May 11, 2011 9:25 am
Location: USA

Re: Snap on 45 degree points

Post by Husky » Mon Apr 01, 2019 5:17 am

ljbuller wrote:
Mon Apr 01, 2019 3:15 am
Is there a way to snap on the 45 degree points around a circle?
No. There are only snaps to the Circle references what means every 90 degree.
ljbuller wrote:
Mon Apr 01, 2019 3:15 am
If I create a line that I want to go from the 225 degree point to the 45 degree point on a circle for instance.
Given circle:
Launch the "Line from Angle" tool,
Option infinite line, Angle 45 degree,
snap this line to the center of the circle,
launch the "Auto Trim" tool and click the line inside the circle.

Husky-2019.03.31-06.png
Husky-2019.03.31-06.png (27.46 KiB) Viewed 437 times
ljbuller wrote:
Mon Apr 01, 2019 3:15 am
Or I have an Instrument with a 3.5" bolt circle diameter and I want to place screw holes on the 45 degree points on that circle.
Drew the 3.5" circle, place the first screw hole precisely on that circle and rotate (copy) the screw hole around the center of the 3.5" circle.

Husky-2019.03.31-04.png
Husky-2019.03.31-04.png (26.38 KiB) Viewed 437 times

In this case the Rotate dialog would look like this example:

Husky-2019.03.31-02.png
Husky-2019.03.31-02.png (14.54 KiB) Viewed 437 times
Work smart, not hard: QCad Pro

riverbuoy
Senior Member
Posts: 110
Joined: Thu Oct 03, 2013 5:37 pm

Re: Snap on 45 degree points

Post by riverbuoy » Mon Apr 01, 2019 5:27 pm

Hi guys,

My two cents worth. If you have multiple circles to draw the lines in, it might be slightly quicker to use the 'Centerline Cross' tool.
Select 'Misc->Draw->Centerline Cross', shortcut 'CS'.
centrelinecross.png
centrelinecross.png (4.89 KiB) Viewed 422 times
Set X to 100, Y to 0 and the third box to 'Percent'. The X setting is the size of the horizontal line, and Y the size of the vertical line. This will draw only one line because Y is 0. Set the angle to the appropriate value.
circle_lines_at_angles.png
circle_lines_at_angles.png (4.72 KiB) Viewed 422 times
You can change the angle at any time. For example in the above figure, I set the angle to 0 and then selected the first circle, then I set the angle to 45 and selected the second circle, and so on. Notice that using 225 degrees produces the same result as 45 degrees.

I hope this helps

Regards

riverbuoy

ljbuller
Active Member
Posts: 25
Joined: Mon Jun 19, 2017 1:52 am

Re: Snap on 45 degree points

Post by ljbuller » Tue Apr 02, 2019 5:35 pm

can we add the 45 degree points as reference points as a new feature?

Post Reply

Return to “QCAD 'How Do I' Questions”