Summary

It is a new bearing design. It is customizable as it is written in OpenJScad. As I had strong bed adhesion issues, I uploaded two models. 'No raft' one is directly on bed. Other one has 1 mm gap between bed and base. This will force slicer to have support.

Support also ensures no fusion of first layer.

Print Settings

Printer:

RapideLite 200

                                            <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>40%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>First try 'No-Raft' STL. If it does not work, enable support for WithSupportAsRaft and try. In my case even 0.5 times of nozzle size tolerance also worked great, but, only with 'WithSupportAsRaft' option as i have an super bed adhesion issue and in all my print i use this forced raft. In case of forced raft, I normally configure 50% support fill. </p></div>

Post-Printing

If you use WithSupportAsRaft option

            <div><p>Post printing you need to sand the base for smoothness. Post sanding it works g8</p></div>

How I Designed This

Inspired by 3D printed planetary gear

            <div><p>After sucessfully printing planet - sun gear, I got this idea and designed it. For 608 bearing size other standard model found to be too weak, so, I designed it and bit surprised with its strength and output.<br>In OpenJScad, first designed the 2D model and rotate_extruded it as bearing. Hope it will be useful for someone.</p></div>

Bearing - OpenJScad based new design