Summary

Update 2020-03-24: Supports no longer needed for the roller.

I designed this for rolling a silicone heater onto my print bed.

Roller dimensions: 30mm dia x 50mm width. Parametric f3d is included so you can adjust these somewhat.

You need the following non-printed parts:

2x 608 bearing
2x M5x25 or M5x30 button head cap screw
2x M5x16 button head cap screw
2x M5 hex nut
2x M5 washer

(The nuts and washers could be replaced with printed parts.)

Print Settings

Printer Brand:

Printrbot

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Printrbot Simple Metal</p></div></p>                                                                                <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>0.2</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>I printed mine in PLA but other materials should be fine.</p></div>