A 3D printer for synthesizing objects includes: an extruder configured to extrude layers of filament through a nozzle onto a build surface; a build platform; and a build plate that is structured for being removably clamped to the build platform and that includes the build surface, where the build platform includes a base, a heating layer, at least one compressible biasing element arranged between the base and the heating layer, and a clamp, and where the build platform is configured for receiving the build plate into a clamping position in which the clamp is configured to releasably clamp the build plate onto the build platform above the heating layer, causing the at least one compressible biasing element to compress and bias the heating layer upwards towards the clamped biasing plate for even distribution of heat by the heating layer over the planar extension of the build surface.