How to create a parallel line at a specific distance in BricsCAD?
Short Answer
To create a parallel line at a specific distance in BricsCAD, use the OFFSET command. Enter the required offset distance, select the source object, then click the side where you want the new parallel line. This is the fastest and most common professional method. Limitation: it only works correctly on offsettable geometry.
What You Need to Know Before
Warning: Offsetting locked-layer objects, non-coplanar entities, or complex polylines can fail or produce unexpected results. A very common mistake is clicking the wrong side of the source line, which places the new parallel line at the correct distance but in the wrong direction.
How to Create a Parallel Line at a Specific Distance
Command: OFFSET
Shortcut: O
Quick Steps:
- On the Ribbon, go to Home > Modify > Offset, or type O and press Enter.
- Enter the offset distance, then press Enter.
- Select the line or polyline to offset, then click on the side where you want the new parallel line created.
Use the Through option only if you want to define the offset by a picked point instead of a numeric distance.
Variables & Settings
Key Setting: Erase source option in the offset command
Expert Setting: Keep Erase source set to No in normal drafting workflows so BricsCAD creates the parallel line without deleting the original object. If set to Yes, the source object is removed, which can cause accidental data loss during production drafting.
Why it Fails
- Cause 1 (Geometry): The selected object is not a simple offsettable entity, or the object geometry is too complex and creates self-intersections.
- Cause 2 (layers/Locks): The source object or target layer is locked, preventing the new parallel object from being created properly.
- Cause 3 (Command/Logic): The distance is entered correctly, but the user clicks the wrong side of the source object, so the parallel line appears on the opposite side.
Quick Fix & Best Practice
- Quick Fix: Run OFFSET again, verify the distance, and zoom in before clicking the correct side of the object.
- Manager’s Verdict: Use OFFSET for nearly all standard parallel-line work because it is fast, accurate, and easy to audit. Avoid manual copy methods unless the geometry or workflow specifically prevents a clean offset.
FAQ
Can I offset a polyline in BricsCAD?
Yes, OFFSET works on many polylines as long as the geometry supports a valid offset.
Can I create multiple parallel lines with one command?
Yes, you can keep using OFFSET repeatedly until you exit the command.
Can I offset by clicking a point instead of typing a distance?
Yes, use the Through option in OFFSET.
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