Cleaning tips to .dwg files for Dwg2Tgml

[Hannu]

Hi all, I'm sharing our cad-designer cleaning tips for dwg files. These tips will help you significantly reduce the file size and improve the usability of your graphic image.

- Remove all excess (module lines, dimension lines, loose furniture, ceiling markings,
wall insulation, etc.): either delete or turn off the layer. Note! Freezing the layer hides the objects from
dwg, but Dwg2Tgml will unearth them, so use the turn off layer (=light bulb symbol).
- Wall insulation markings are often the most common reason for the large file size of tgml. If the walls are
drawn as whole blocks, the blocks must be exploded with the explode command to remove the insulation markings.
- Dwg2Tgml cannot translate multi-line text: multi-line preserved text (=MText) must be exploded into
single-line text (=Text) with the explode command.
- if the room texts have been made as blocks, the blocks must be exploded with the burst command (the command is only available in the
full version, not in LT). The burst command usually explodes the blocks into multi-line texts, which must then be exploded into single lines.
- Dwg2Tgml cannot convert arcs, ovals, etc. drawn as ellipses, but must be converted to arcs using the E2A command,
which can be used by downloading the E2A-lisp add-on to the computer and enabling it in CAD using the
appload command. Dwg2Tgml often turns the arcs of door symbols inside out / as it happens,
precisely because the architect has drawn the arcs as ellipses.
- It is worth removing overlapping lines, symbols, etc. from the images with the overkill command, the tgml file size
is usually reduced considerably.
- If Dwg2Tgml does not recognize the dwg image at all, the dwg file is usually either corrupted or saved in the
print tab view:
- If the dwg file opens in the print view when opened in CAD, click the
model tab at the bottom left and save the file.
- If Dwg2Tgml still does not recognize anything from the image, copy the image to a new, empty file and
save.
You can try to repair oversized (=corrupted) files with the audit, purge, -purge, overkill and delcon commands.