The .bld file extension is used by a variety of software applications for a wide range of file types. The .bld extension is most commonly used for 3D Home Design Suite model files. It is also used for Basic Bload image files, MegaPaint image format files, ACT! files, EnergyPro files, My Personal Programmer project files, RealFlight radio control airplane description files, VersaPro block build info files, Visual Build project files, Weinberger picture sequence files and Yoot Tower saved game files.
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If you have additional information about the BLD file format or software that uses files with the BLD suffix, please do get in touch - we would love hearing from you.