TinyBoy RA20

The TinyBoy RA20 is an FDM 3D printer from TinyBoy with a 80 x 80 x 80 mm build volume.

Calibration

• Start with a PLA-only baseline and lock the environment down before any tuning.

Action: Install a known-good PLA spool, use a clean nozzle, and begin with a simple geometric test model such as a 20 mm cube, a single-wall tower, or a small calibration cross. Keep the machine in a room with minimal drafts because this class of printer is explicitly tuned for PLA and lacks a heated bed.

Common defects

The supplied sources do not provide a formal defect bulletin or recall notice for the TinyBoy RA20 specifically, so the issues below are the most credible inferences from the referenced machine class and must be treated as operational risks rather than confirmed factory defects.

• No heated bed, leading to adhesion limits and warp risk

Symptoms: Corners lift, thin parts detach, and larger footprints fail more often than very small ones.