Adding an Insertion Point to a CAD Block
| Reference Number: KB-01032 Last Updated: 09-30-2013 05:22 AM
The information in this article applies to:
I created a CAD block that I would like to add to the library for future use, and am interested in adding a snap point to it to help control how it gets placed. Do you have any suggestions?
Object Snaps aren't able to locate the sub-objects within a CAD block: they're only able to locate snap points along the CAD block's bounding box perimeter (the rectangle around which its edit handles display) and at its center. This can sometimes make it difficult to snap a CAD block to a particular location when placing it from the library.
To create a CAD block with an insertion point
- Open the plan in which you have created a CAD block that requires a custom insertion point.
- In this example, we will add an insertion point to a CAD block representing a J bolt.
- Make sure that all of your Object Snaps are enabled.
- An easy way to do this is to select Edit> Snap Settings from the menu and make sure all of the items in the submenu have check marks next to them.
- Select the CAD block and click the Explode CAD Block edit button.
- Select CAD> Points> Place Point from the menu, then move your mouse pointer over the part of the exploded CAD block that you would like to use as an insertion point when you move the CAD block.
- In this example, the center point of the bottom edge of the washer is used.
- When you see the appropriate Object Snap indicator, click to place a temporary CAD Point at that location.
- In this example, we watched for the Midpoint snap indicator.
- Click the Select Objects button, then hold down the Shift key on your keyboard and click and drag a rectangular selection marquee around the exploded CAD block.
- With all of the original component objects of the CAD block selected, click the Make CAD Block edit button to block them together again. The temporary CAD point will not be included.
- Select CAD> Circles> Circle About Center , from the menu, then move your mouse pointer over the temporary CAD point and watch for the appropriate Snap Indicator.
- In this example, the center point of the bottom edge of the washer is used and we watched for the Points/Markers snap indicator.
- When you see the Snap Indicator, click and drag in any direction to draw a circle.
- Click and drag the circle so that it encompasses the entire drawing. Its centerpoint will become the insertion point for the CAD block.
- Click the Select Objects button, then hold down the Shift key on your keyboard and click and drag a rectangular selection marquee around the circle and the CAD block within it.
- With all of the circle and CAD block selected, click the Make CAD Block edit button to block them together.
To add the CAD block to the library
- With the CAD block still selected, click the Add to Library edit button.
- The CAD block will be added to the Import library category.
- Move the CAD block to a logical location in your User Libraries, which is where you can organize all of your custom library content to suit your needs.
- You can now place your custom CAD block in any plan file.
To place the CAD block using your custom insertion point
- Open the plan in which you would like to place your custom CAD block.
- In this example, the J-bolt CAD block with insertion point will be placed in a CAD drawing of a foundation detail.
- Make sure that all of your Object Snaps are still enabled.
- Browse to your new CAD block with the insertion point in the Library Browser and select it, then move your mouse pointer into the drawing area. A preview of the CAD block displays, and as you move your pointer, the CAD block's center point follows the location of the pointer.
- Move your pointer over the location where you want to snap the CAD block's insertion point. When you see the desired Snap Indicator, click the mouse button once to place the CAD block at that location.
- Click the Select Objects button, then click on the newly placed CAD block to select it and click the Explode CAD Block edit button.
- Select the CAD circle and delete it.
- If the remaining CAD block displays behind other objects in the drawing, select it and click the Open Object edit button.
- On the Line Style tab of the CAD Block Specification dialog, check the box beside Move to Front of Group and click OK.