How-to guide · how to insert a dwg block in draftsight
How to insert a DWG block in DraftSight
By Sumana Kumar · Published 22 Jul 2022 · Updated 26 Jun 2025
DraftSight is a popular AutoCAD alternative that works natively in DWG, which makes the downloadable blocks here a perfect match. The mechanics are close to AutoCAD's, but DraftSight uses its own command names — INSERTBLOCK rather than INSERT — and offers a handy Design Resources palette for browsing block files. This guide covers both routes plus the unit-scaling habit that keeps blocks landing at the right size.
If you have come to DraftSight from AutoCAD, the muscle memory mostly transfers; the command aliases are deliberately similar and the dialogs feel familiar. If DraftSight is your first CAD program, this is a good place to learn block insertion, because once you can place one DWG block you can populate a whole plan with furniture, doors and fixtures in minutes.
Step 1 — Get the DWG and confirm drawing units
Download the block as a DWG and save it somewhere stable — a dedicated blocks folder keeps it reusable across drawings. The blocks here are drawn full size in millimetres, so your drawing should be set up the same way for them to land at true scale.
In DraftSight, type UNITS to open the Unit System dialog and confirm the insertion units. DraftSight respects the INSUNITS variable just like AutoCAD, so when the drawing and the block both declare millimetres, the block scales automatically on insertion. Getting this right once at the start of a drawing saves you correcting block sizes later.
Step 2 — Run INSERTBLOCK or open Design Resources
The direct route is the command line: type INSERTBLOCK (DraftSight's equivalent of AutoCAD's INSERT) and press Enter. In the Insert Block dialog click Browse, navigate to your downloaded DWG, and select it. The dialog exposes the same controls you would expect — insertion point, X/Y/Z scale and rotation, each with a 'Specify on screen' option.
Alternatively, open the Design Resources palette from the Tools menu. It lets you browse to a folder of DWGs and see the blocks they contain, then drag one onto the drawing. This palette is the better workflow when you have a library of downloaded blocks and want to audition several without re-opening a dialog each time.
Step 3 — Set the insertion point, scale and rotation
With the insert running, click to place the block's base point where you want it on the drawing. If you want a specific scale or rotation, type the values at the prompt or tick 'Specify on screen' and set them interactively.
Leave the scale at 1 when the block's units already match the drawing — the geometry is true size and needs no adjustment. Working in metres? Insert at 0.001. On an imperial template, set the drawing's insertion units to millimetres in the UNITS dialog so DraftSight converts on the fly rather than asking you to remember a conversion factor. The result is a single block reference, easy to copy, mirror, array and rotate as one piece.
Step 4 — Manage the block's layer
After placing the block, decide which layer the reference should sit on. Select it, open the Properties palette, and assign a meaningful layer — a furniture, joinery or fixtures layer rather than the default. DraftSight's layer tools mirror AutoCAD's, so freezing and thawing a furniture layer lets you switch between a clean structural plan and a fully furnished one from the same file.
If the downloaded block's geometry was drawn on layer 0, moving the reference onto a coloured layer makes it inherit that layer's colour and lineweight — the standard way to make one neutral block read correctly in different drawings without editing the source file.
Step 5 — Build a DraftSight block library
To turn a block into a permanent library asset, use the EXPORTBLOCK command — DraftSight's WBLOCK equivalent — to write the block out as its own DWG with a chosen base point and units. Organise these exported DWGs into category folders the way the catalogue here is organised, and the library stays easy to navigate.
Then point the Design Resources palette at that folder. From any drawing you can browse the library tree and drag a block straight onto the canvas, which is far faster than re-running a dialog for every insertion. Because everything stays in plain DWG, the same library works if you later open the files in AutoCAD, BricsCAD or any other DWG-native tool.
Common DraftSight insertion mistakes
The number-one issue is the size shock: a block that comes in tiny or enormous almost always signals an insertion-units mismatch, not a bad file. The fix is UNITS — set the insertion scale to millimetres to match the block — followed by a fresh insert. Reaching for SCALE every time is treating the symptom.
A second trap is exploding the block to clean it up. An exploded block is no longer a single reference, so you forfeit the ability to update every copy at once and you scatter its geometry onto whatever layers it was built on. If you need to alter the symbol, edit the block definition with the Block Editor instead, so the change ripples through every instance rather than just the one you exploded. Lastly, when you download from several sources, keep your naming tidy — two different blocks called 'Block1' will clash if you insert them into the same drawing, so rename on export. DraftSight's close compatibility with AutoCAD means almost any AutoCAD block tutorial applies here too, which is handy whenever you hit an edge case this guide doesn't cover, and the plain-DWG files keep everything portable to other programs later.
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Questions
Frequently asked
What command inserts a block in DraftSight?+
Use INSERTBLOCK — it is DraftSight's equivalent of AutoCAD's INSERT. Type it at the command line, click Browse, and choose the downloaded DWG. You can also drag a block in from the Design Resources palette.
Are these DWG blocks compatible with DraftSight?+
Yes. DraftSight works natively in DWG, so the blocks here insert directly with no conversion. They target AutoCAD 2004 format, which DraftSight reads without any problem.
Why is my block the wrong size after inserting in DraftSight?+
It is an insertion-units mismatch. Type UNITS, set the insertion scale to Millimeters to match the block, then insert again. DraftSight then rescales the block automatically to true size.
How do I save a block to reuse across DraftSight drawings?+
Use EXPORTBLOCK to write the block out as a standalone DWG, then point the Design Resources palette at that folder. You can drag blocks from the palette onto any drawing without re-running a dialog.
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