3M™ Bayonet to Portwest® Bayonet Filter Adapter

thingiverse

3M Bayonet to Portwest Bayonet Filter Adapter ============================================= This project has evolved from a proof of concept to a prototype design, as requested by Daramcgrath. The adapter is designed to connect 3M bayonets to Portwest filters, and I have used scaled images online to approximate the dimensions of the Portwest bayonet. To finalize this project, support from the 3D printing community in the UK and Europe will be necessary to test the fitment and revise the dimensions as needed. Part Description: ================ The adapter has undergone several revisions, with each version featuring improvements and refinements. The current version is Gen 3, which includes: * Completely reworked 3M bayonet to filter geometry for proper fitment and compression against OEM gaskets * Reduced overall length (OAL) of the adapter * Chamfered 45 degrees on the wrenching ears to remove printing overhangs Disclaimers/Risks: ================== 1. This is a proof of concept, and the model is still in development. 2. Use proper gaskets or o-rings to ensure a secure seal between the cartridge and bayonet. 3. Perform negative pressure tests to ensure a tight seal on the respirator. 4. Use at your own risk – this is a temporary solution until supply chains normalize. Development Notes: ================== * Initial model release: 04/11/2020 * Revised model based on feedback from Daramcgrath: 04/13/2020 * Confirmed bayonet geometry with Portwest filters: 04/22/2020 * Gen 3 model release: 04/28/2020 Credits: ========= Special thanks to Daramcgrath for their contributions to this project.