Spell Book - Jack in the Box

prusaprinters

<p>Do you want to frighten your friends? Then ask one of your friends to open your Halloween ‘Spell Book’.<br>You open the box by pulling out a ‘skull peg’, situated at the side of the box. The pressure inside the box will make it spring open.<br>The box lid jumps open by the safe PLA spring positioned inside. On top of the spring is a small shallow square plate. You can use the plate to put some small Halloween tokens on it. When the box is opened the tokens will jump in the air!<br>Provided with the model are 6 iconic Halloween tokens.</p><p>REVISED MODEL - Original lid had a channel for Text and Pentangle to add glowing resin. However, I have now included another lid, This time the Text and Pentangle are Extruded so you can add another colour filament, Maybe a glowing one! See image Galaxy Silver and Black.</p><p>If you didn’t want to use the box as a ‘Jack-in-the-box’ then the model could just be kept as an unusual Halloween themed box. The box is well proportioned so it could have a number of uses.<br>The six iconic tokens added to the model as well as being used to jump in the air could be used as counters in many a board game. (Maybe invent your own Halloween game?)<br>The box is simple to construct and I have even removed the 1st layer underneath the lid where the hinges and catch are to be glued so they can be accurately positioned.</p><p>When printing with different brands of material in this case PLA, or even the same brand with a different colour you will find they may have different print temperature. Likewise they have other different mechanical properties.<br>The spring effect with the oval shaped PLA will also vary depending on what filament you use with regards to how springy they will be. Therefore I have included 3 different Ovals/Springs. The only difference is they have a slightly different thickness this gives the shape strength and therefore springiness. I am happy to design more ovals and add them to the website if required.<br>FOR SAFETY REASONS I DO NOT RECOMMEND USING ANYTHING ELSE.</p><p>Construction of the box is very simple;</p><ol><li>Put the hinges inside the box and glue the hinge cap to secure them in position.</li><li>Glue the catch inside the lid parallel to the front edge with the thickest section next to the lid.<br>(You can compare the thickness surrounding the square hole in the box)</li><li>Glue a square plate to either side of the oval spring, along the longest length of the oval.</li><li>Glue the long rectangle inside the base of the skull, this will be the peg (key)</li><li>Glue the lid to the hinges using the marks provided. The hinges match up to the edge of the lid.</li><li>Then have fun!</li></ol><h3>Print instructions</h3><p>Prusa i3 Mk3S printer settings;<br>All items used the following settings;<br>Draft 0.2 mm, Nozzle Temp 205-220 C, Bed 50 C,<br>Print Speed 25-80 mm/sec, infill 15% grid.</p><p>Ender 3 Pro printer settings;<br>All items used the following settings;<br>Draft 0.2 mm, Nozzle Temp 220 C, Bed 50 C,<br>Print Speed 50 mm/sec, infill 10% grid.</p><p>The Box;<br>Size: 100 x 110 x 25.4 mm (4” x 4.25”x 1”)<br>Support: None required the holes are small enough to support themselves.</p><p>Size: 100 x 120 x 1.75 mm (4” x 4.75”x 0.07”)<br>Support: None required the holes are small enough to support themselves.</p><p>2 x Hinges;<br>Size: 18 x 16 x 15 mm each, (0.7” x 0.6” x 0.6”)<br>Support: none required if printed as shown.</p><p>2 x Hinge Caps;<br>Size: 10 x 10 x 7 mm each, (0.4” x 0.4” x 0.3”)<br>Support: none required if printed as shown. I had no problem re bed adhesion (you can use a brim if problems)</p><p>Lid Catch;<br>Size: 12 x 15 x 3 mm (0.5” x 0.6” x 0.12”<br>Support: none if printed as shown.</p><p>Skull;<br>Size: 15 x 18 x 20 mm, (0.6” x 0.7” x 0.79”)<br>Support: required for back of skull, support from base. See image provided.</p><p>Skull Peg;<br>Size: 5 x 5 x 20 mm (0.2” x 0.2” x 0.79”)<br>Support: none required.</p><p>Spring;<br>Size: 80 x 40 x 10 mm (3.15” x 1.56” x 0.4”)<br>Support: Due to small surface area on the printer bed a brim is required.</p><p>Square Plate;<br>Size: 40 x 40 x 3 mm (1.57” x 1.57” x 0.12”)<br>Support: no support required.</p><p>Iconic Tokens;<br>Size: All are 1.5mm thick<br>Support: I did not need any support to print them.</p>