I have Draftsight but I know most people don't use it rather Autocad. I am pretty sure they are very similar. How would I place a line equidistant between two other lines.

In the drawing below, I want to place a "tick" mark equidistant from the two lines marked with red.

 

There are a few ways in Acad, one is if you know the angle of a line drawn through centre to the tick location, draw a temporary line at that angle then place a Point or Node at the circle circumference then delete the line.
Max.

 

My CAD is Graphite (Ashlar-Vellum) -- a very old version (6). For something like that I can just use a "divide" command and enter the number of segments needed. Then draw the line and trim.

When you first mentioned the protractor subject, I figured the easiest path including labels would be to work on a segment (say 10°) then copy, rotate, and finally edit text. That would avoid having to arrange each degree label on an arc.

My native format is "VC6," but I can export and import DXF.

 

I'm not familiar with either program, but do you have the facility to rotate an object by a specified angle (in this case 9° or 18°) about a specified point at a specified radius?

 

As Alec said.. Draw a short line at the quadrant at 90 degrees then rotate it 27 degrees about the center...

You have 20 segments ( 18 degrees each ) 18 + half = 27.

 

If you only want one tick, which seems to be the question, and if you can't divide the arc as i suggested. Do simple geometry.
Option 1: Draw a straight line between the two marks and divide it into 2 segments. Draw line from middle to center and extend to perimeter or simply to perimeter (if your program indicates when intersections are perpendicular). Trim.
Option 2: Draw an arc of fixed radius (radius >1/2 the distance between the marks) at each endpoint. Then from the intersection of the arcs, draw a line to the center. Trim as needed.

 

If you only want one tick, which seems to be the question, and if you can't divide the arc as i suggested. Do simple geometry.
Option 1: Draw a straight line between the two marks and divide it into 2 segments. Draw line from middle to center and extend to perimeter or simply to perimeter (if your program indicates when intersections are perpendicular). Trim.
Option 2: Draw an arc of fixed radius (radius >1/2 the distance between the marks) at each endpoint. Then from the intersection of the arcs, draw a line to the center. Trim as needed.

Not sure I understand all of that but I got the basic idea. I drew a temporary line then used the snap feature from the center. Thanks for the help everyone.

 

Yo... spinnaker, I'm an AutoCAD expert. Next time you have a question, feel free to tag me and I'll be more than happy to help you out.

 

Yo... spinnaker, I'm an AutoCAD expert. Next time you have a question, feel free to tag me and I'll be more than happy to help you out.

OK How would you have done this? Was there a better way?

Also is there a free version of AutoCAD other than the educational version? I am not seeing it on their site if there is.

 

Autocad has a "polar / array" function... draw 1, set it's center and tell it how many you want in 360 degrees..

Autocad does the rest!

 

Yo... spinnaker, I'm an AutoCAD expert. Next time you have a question, feel free to tag me and I'll be more than happy to help you out.

OK here is one for you. You helped me with this one here.

https://forum.allaboutcircuits.com/threads/draftsight-geomtry-help.144826/page-2#post-1229367

I got everything replicated except the angles of the compartments aren't matching up.

Here is the original.


I am trying to make a 360 degree template so I can put numbers in a circle with the same spacing as the "compartments".

This is what I came up with but again the angles don't match.






Here is how I copied the line. I think my angle is off but the number of lines appear to be right.




I went a different route and got it done but I would sure like to know how I built it in the first place.

What I did was to copy the top and flip it.

 

Looks like the equivalent of the 'Array' command in Autocad.
Max.

 

I think my angle is off

Looks ok to me.

 

Looks ok to me.

I think I have too many lines.

 

That was it You need to go one less line then what you need.

 

I've just had a play with LibreCAD and got this

by the process of
1) Drawing a rectangle (the top element of the array),
2) Selecting it,
3) Using the Rotate function with a suitable Rotation point set as per the prompt at the foot of the screen, the Reference point set as the centre of the base of the rectangle, and the following parameters


Edit: Don't know why I chose angle=342; must have had a previous play on the brain.

 

Hey thanks. I was wondering how to do that in LibreCAD. Right now I am using both Draftsight and Libre CAD during the transition. Good to know there is another LibreCAD user around here.

What is good about Draftsight is it seems to be pretty much an ACAD clon.

Are you using any free CAM software that is as good as LibreCAD?

 

The finished product. The idea is for the numbers here



fit inside here.



Note: Two drawings not to scale.

Thanks for the advice everyone!

 

Some of your numbers to not look like they are on radiuses. "6" is particularly obvious. Did you line them up by sight or use geometry to get then aligned from a horizontal.

 

Some of your numbers to not look like they are on radiuses. "6" is particularly obvious. Did you line them up by sight or use geometry to get then aligned from a horizontal.

Rats I just noticed that now. Yes I did it by sight. Any suggestions on improving it? I was going to make an inner circle to get the tops of the numbers lined up.