Summary

This design is an improvement from this: http://www.thingiverse.com/thing:902390 which again is a remix from this http://www.thingiverse.com/thing:604915.
The modifications which were made to improve the ease of sliding in and out the Raspberry Pi are just two.
First we increased a bit the groove at both sides and also added a slope at the bottom so that the Pi can slide up into place easily.

Print Settings

Printer Brand:

LulzBot

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>TAZ 4</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>20%</p></div></p>

Raspberry Pi 3 sleeve case improved fit