Drawing Viewer Information

Qimtek receive RFQ drawings from buyers in a variety of different formats. These depend on the specific CAD package used by their designers and the nature of their business.
For the convenience of our members we convert all drawings to either Portable Document Format (.pdf) for 2D drawings, or Stereo Lithography (.stl) for 3D objects. Free viewers for these formats are listed below.

However, we always distribute the original drawings too; the "native" viewer may let you measure dimensions, or  see alternative views, layers or structural details that may be lost when converting to PDF or STL. Occasionally, projects include Microsoft Office files; Excel (.xls), Word (.doc) or PowerPoint (.ppt) as well as technical drawings. If you don't have Microsoft Office, free viewers are available here.

This table lists all the common RFQ drawing formats, with a link to a free viewer. Viewers are regularly updated as file formats evolve, so you should download the latest version if you have problems.
(Please note: other viewers may exist for each format. We are not endorsing the one listed here).

File Extension
Description
.bmp
bmp (bitmap) is a standard image format. Almost every graphics program can open bmp files, such as "Paint" which is included with Windows.
.dft
dft is the draft SolidEdge file format and can be opened with their free viewer. This viewer also opens DXF and DWG files as well as other SolidEdge formats.
.dwf
DWF is an AutoDesk file format designed for reviewing AutoCAD engineering drawings.
Files can be opened using the free AutoDesk Design Review program
.dwg
dwg is a standard AutoCAD file format for engineering drawings.
There are several free viewers including A9CAD from A9Tech and the SolidEdge viewer
.dxf
dxf is a standard AutoCAD file format for engineering drawings. There are several free viewers including A9CAD from A9Tech and the SolidEdge viewer
.exe
.exe files are executable programs.
You should be very wary of downloading exe files unless you trust the source and also have an up-to-date virus scanner installed.
.fcw
FCW files are FastCAD images and can be opened with their free viewer. This also opens DWG, DXF and other FastCAD formats such as .fc7.
.gbl
.gbl is a Gerber Bottom Layer file for printed circuit boards. A free Gerber viewer called ViewMate is available from Pentalogix
.gbr
.gbr is a Gerber file for printed circuit boards. A free Gerber viewer called ViewMate is available from Pentalogix
.gbs
.gbs is a Gerber Bottom layer Solder-resist file for printed circuit boards. A free Gerber viewer called ViewMate is available from Pentalogix
.gif
gif (graphics interchange format) is a standard image format. Almost every graphics program can open gif files, such as Paint and Internet Explorer, both of which are included with Windows.
.gtl
.gtl is a Gerber Top Layer file for printed circuit boards. A free Gerber viewer called ViewMate is available from Pentalogix
.gto
.gto is a Gerber Top Overlay file for printed circuit boards. A free Gerber viewer called ViewMate is available from Pentalogix
.gts
.gts is a Gerber Top layer Solder-resist file for printed circuit boards. A free Gerber viewer called ViewMate is available from Pentalogix
.idw
A free AutoDesk Inventor viewer can be downloaded here
.igs
- or sometimes ".iges" - Kubotec Spectrum Lite
.jpg
jpg is a standard image format. Almost every graphics program can open jpg files, such as "Paint" which is included with Windows.
.pdf
PDF (Portable Document Format) is the almost universal format from Adobe.
To open PDF files you need Adobe Reader (formerly Acrobat Reader).

It's worth downloading the latest version if you have a problem opening a particular PDF file, as the format has changed over the years
.png
.png (Public Network Graphic) is a standard image format. Almost every graphics program can open png files, such as "Paint" which is included with Windows.
.prt
A .prt file is (probably!) a CADKEY parts file. This can be opened using the free "lite" version of Kubotek Spectrum Lite.
.stl
This is an open 3D format. STL ("stereo lithography") files can be viewed with  Myriad 3D Reader.
note: If you double-click the downloaded STL file, Windows tries to open it as a security certificate. To avoid this start Myriad 3D Reader using Start / Programs, click File, Open, change the "type of file" to STL, browse to where you downloaded the file, then click Open. Alternatively, if you are experienced with Windows, you could change the STL file association
.tif
.tif or .tiff (Tagged Image File format) is a standard image format often generated by fax machines and scanners. 
Almost every graphics program can open tif files, such as "Paint" which is included with Windows.
.zip
A zip file is a container for one or more files. Zips are often used because the contents are compressed (making the download quicker) and convenient (only one file needs to be downloaded).
Zips can be opened directly by Windows XP or Vista. For earlier systems the most popular commercial unzipper is WINZIP , but there are free alternatives such as 7ZIP
.edrw
Edrawing files can be opened with free Solidworks viewer
.wrl
This is an open 3D format. VRML ("Virtual Reality Modelling") files can be viewed with SolidView Lite or Myriad 3D Reader - both are free and the latter includes dimension measurement.
.slddrw
slddrw files can be opened using the SolidWorks eDrawings viewer

.sldprt
sldprt files can be opened using the SolidWorks eDrawings viewer
.xls
Microsoft Excel spreadsheet
.pps
A PPS file is a PowerPoint Slideshow
.x_t
The x_t file extension is associated with Parasolid