├── COPYING ├── README.md ├── docs ├── Instructions.md ├── Releases.md └── img │ ├── align-60.jpg │ ├── assembled.jpg │ ├── filament-in-bag.jpg │ ├── spindle.jpg │ └── thread.jpg ├── stl ├── README ├── carriage.stl ├── clip-wide.stl ├── clip.stl ├── holder-short.stl ├── holder.stl ├── spindle-wide.stl └── spindle.stl └── zipspool.scad /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Print directly from filament stored in a ziplock bag. 2 | 3 | Prevent dust and humidity from getting into your filament. See the 4 | [instructions](docs/Instructions.md) for details on printing and 5 | assembling this filament spool holder. 6 | 7 | ![filament-in-bag](docs/img/filament-in-bag.jpg) 8 | -------------------------------------------------------------------------------- /docs/Instructions.md: -------------------------------------------------------------------------------- 1 | In order to use this spool holder you will need: 2 | 3 | 1. The printed parts from the [stl directory](../stl/). You will need 4 | two copies of the holder file (print the same holder object twice), 5 | one spindle, one clip, and one carriage. If you have a print bed 6 | that is too small to fit the default holder then you may print the 7 | holder-short file instead. If you are using a large filament spool 8 | (such as a "5lb spool") then use the holder, spindle-wide, and 9 | clip-wide files. 10 | 11 | 2. PTFE tubing (4mm outside diameter). At least 15cm (6 inches) of 12 | tubing is needed. It is also recommended to have enough tubing to 13 | go from the spool holder to the extruder motor. It is recommended 14 | to use tubing with an inside diameter of 3mm (an inside diameter of 15 | 2mm also works but has higher friction). 16 | 17 | 3. A ziplock bag (optional). Regular 1Kg spools will fit in "2 gallon 18 | bags" (13x15inch / 33x38.1cm) that can be widely found in grocery 19 | stores. It's also possible to purchase thicker ziplock bags online, 20 | which do a better job at keeping out humidity. A regular 1Kg spool 21 | will fit in a 12x15inch (30.5x38.1cm) 6mil bag. 22 | 23 | 4. Desiccant (optional). A few packets of desiccant will help keep the 24 | filament dry. Look online to purchase desiccant packets that change 25 | color when they are saturated and that can be microwaved to reuse. 26 | 27 | ### Assembling the printed parts 28 | 29 | It is a good idea to assemble the printed parts without the spool 30 | first as the printed parts may initially be tight. 31 | 32 | Align the channels on the spindle with the protrusions on the holder 33 | and insert the spindle into one of the holders. Then turn the spindle 34 | 30 degrees to lock the spindle into place. 35 | 36 | ![spindle](img/spindle.jpg) 37 | 38 | Align the spindle channels with the protrusions on the second holder 39 | such that the two holders are about 60 degrees out of alignment. Push 40 | the holder onto the spindle and then twist the holder so that both 41 | holders align. Once you've completed twisting the two holders into 42 | alignment it should not be possible to further twist the two holders 43 | in that direction. At this point the two holders and spindle should be 44 | locked into place. 45 | 46 | ![align-60](img/align-60.jpg) 47 | 48 | Attach the printed "clip" object to the two holders - it should fit 49 | into one of the grooves on the side of the holder and click into 50 | place. The flat side of the clip (the side that was on the print bed 51 | when the clip object was printed) should be facing up and be nearly 52 | parallel with the ground. 53 | 54 | Cut two lengths of ptfe tubing each approximately 7.5cm (3 inches) 55 | long. After cutting the tubing inspect the opening on the tubing to 56 | ensure it is still round. If the opening is not round, use a small 57 | pliers to push the tubing back into a round shape. 58 | 59 | Hold the carriage object under the clip object so that the round 60 | openings on the carriage are above the flat side of the clip and the 61 | side of the carriage with the small round opening is towards the 62 | spindle. Push a piece of ptfe tubing through the small hole of the 63 | carriage, above the flat side of the clip, and into the larger portion 64 | of the carriage. Once the tubing is inserted the carriage should be 65 | able to move sideways along the clip without detaching from the clip. 66 | Insert the second piece of tubing into the other side of the carriage. 67 | 68 | ![assembled](img/assembled.jpg) 69 | 70 | After completing the initial assembly and verifying that the pieces 71 | fit together, the next steps are to reassemble the pieces with the 72 | filament spool. Keep the filament secure to the filament spool until 73 | it is time to feed the filament through the carriage. 74 | 75 | Remove the clip from the holders and remove one of the holders from 76 | the spindle. Then place the spool on the spindle and reattach the 77 | holder. Attach the clip to a side of the spool holder so that the 78 | filament will be pulled under the filament spool on its way to the 79 | printer. 80 | 81 | Use a pair of scissors to cut 1mm from one bottom corner of a ziplock 82 | bag. The hole should be just large enough for the filament to pass 83 | through it. 84 | 85 | While the spool and spool holder are outside of the bag, carefully 86 | pass the filament through the ptfe tubing and carriage, through the 87 | inside of the bag, and then through the hole in the corner of the bag. 88 | 89 | ![assembled](img/thread.jpg) 90 | 91 | Then place the filament spool into the bag such that it is standing 92 | within the bag (the seal should be at the top). 93 | 94 | Add desiccant to the bag and then seal it. An additional length of 95 | ptfe tubing can be used to go from the ptfe tubing on the clip all the 96 | way to the printer's extruder motor. 97 | 98 | ![filament-in-bag](img/filament-in-bag.jpg) 99 | -------------------------------------------------------------------------------- /docs/Releases.md: -------------------------------------------------------------------------------- 1 | History of Zipspool releases. 2 | 3 | Zipspool v2.1.0 4 | =============== 5 | 6 | Available on 20210120: 7 | * Update clip so that the tube fits into a carriage which can move 8 | sideways along the clip. This encourages the filament to pull 9 | straight from the spool instead of at an angle. This reduces 10 | friction as the spool turns and can reduce the chance of the 11 | filament crimping as it passes through the tube. 12 | 13 | Zipspool v2.0.0 14 | =============== 15 | 16 | Available on 20201117: 17 | * Recommend larger holder size (180mm height) by default. 18 | * Use a varying diameter for spindle. This can reduce friction as the 19 | spool turns. 20 | * Rework clip to fit ptfe tubing on both sides. This reduces the 21 | chance of filament crimping as it enters the tube. 22 | 23 | Zipspool v1.0.0 24 | =============== 25 | 26 | Available on 20190128: 27 | * Initial release. 28 | -------------------------------------------------------------------------------- /docs/img/align-60.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KevinOConnor/zipspool/db22bfcd4e440f4ef09dd5a8f0ccef550578da9e/docs/img/align-60.jpg -------------------------------------------------------------------------------- /docs/img/assembled.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KevinOConnor/zipspool/db22bfcd4e440f4ef09dd5a8f0ccef550578da9e/docs/img/assembled.jpg -------------------------------------------------------------------------------- /docs/img/filament-in-bag.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KevinOConnor/zipspool/db22bfcd4e440f4ef09dd5a8f0ccef550578da9e/docs/img/filament-in-bag.jpg -------------------------------------------------------------------------------- /docs/img/spindle.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KevinOConnor/zipspool/db22bfcd4e440f4ef09dd5a8f0ccef550578da9e/docs/img/spindle.jpg -------------------------------------------------------------------------------- /docs/img/thread.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KevinOConnor/zipspool/db22bfcd4e440f4ef09dd5a8f0ccef550578da9e/docs/img/thread.jpg -------------------------------------------------------------------------------- /stl/README: -------------------------------------------------------------------------------- 1 | This directory contains STL files generated from the main 2 | zipspool.scad OpenSCAD file. 3 | 4 | The holder.stl, spindle.stl, and clip.stl come from the main file. 5 | 6 | The holder-short.stl is generated from the main file with 7 | holder_height=155. The spindle-wide.stl and clip-wide.stl are 8 | generated with spindle_spool_length=101. 9 | -------------------------------------------------------------------------------- /zipspool.scad: -------------------------------------------------------------------------------- 1 | // ZipSpool - Filament spool holder for printing from a sealed bag 2 | // 3 | // Copyright (C) 2019-2020 Kevin O'Connor 4 | // 5 | // This file may be distributed under the terms of the GNU GPLv3 license. 6 | 7 | holder_height = 180; 8 | holder_width = 125; 9 | holder_arm_depth = 10; 10 | holder_arm_height = 5; 11 | holder_spindle_backing = 55; 12 | holder_spindle_offset = 3; 13 | holder_key_angle_offset = 30; 14 | holder_bevel_diameter = 40; 15 | holder_bevel_depth = 5; 16 | holder_clip_height = 5; 17 | holder_clip_width = 2; 18 | holder_clip_offset = 10; 19 | spindle_diameter = 28; 20 | spindle_thickness = 2.5; 21 | spindle_key_diameter = 3; 22 | spindle_key_offset = 5; 23 | spindle_key_angles = [90, 210, 330]; 24 | spindle_spool_length = 71; 25 | ptfe_tube_diameter = 4; 26 | clip_beam_width = 10; 27 | clip_beam_height = 5; 28 | slack = 1; 29 | CUT = 0.01; 30 | $fs = 0.5; 31 | 32 | // 33 | // Holder 34 | // 35 | 36 | module key(angle, diameter) { 37 | rotate(angle, [0, 0, 1]) 38 | translate([diameter/2, 0, 0]) 39 | sphere(d=spindle_key_diameter); 40 | } 41 | 42 | module holder() { 43 | // Start with triangle "arms" forming the base 44 | backing_center_y = (holder_height - holder_spindle_backing/2 45 | - holder_arm_height/2); 46 | module arms() { 47 | module base_cylinder(pos) { 48 | translate(pos) 49 | cylinder(h=holder_arm_depth, d=holder_arm_height); 50 | } 51 | bot1 = [-holder_width/2, 0]; 52 | bot2 = [holder_width/2, 0]; 53 | top1 = [-spindle_diameter/2, backing_center_y]; 54 | top2 = [spindle_diameter/2, backing_center_y]; 55 | union() { 56 | hull() { 57 | base_cylinder(bot1); 58 | base_cylinder(bot2); 59 | } 60 | hull() { 61 | base_cylinder(bot1); 62 | base_cylinder(top1); 63 | } 64 | hull() { 65 | base_cylinder(bot2); 66 | base_cylinder(top2); 67 | } 68 | } 69 | } 70 | // Add in the spindle backing 71 | module arms_with_backing() { 72 | arms(); 73 | translate([0, backing_center_y]) { 74 | cylinder(h=holder_arm_depth, d=holder_spindle_backing); 75 | translate([0, 0, holder_arm_depth-CUT]) 76 | cylinder(h=holder_bevel_depth+CUT, 77 | d1=holder_bevel_diameter, d2=spindle_diameter); 78 | } 79 | } 80 | // Subtract out space for the spindle 81 | cut_diameter = spindle_diameter + slack; 82 | difference() { 83 | arms_with_backing(); 84 | translate([0, backing_center_y, holder_spindle_offset - slack]) 85 | cylinder(h=holder_arm_depth+holder_bevel_depth, d=cut_diameter); 86 | } 87 | // Add in key protrusions on the spindle holder 88 | translate([0, backing_center_y, holder_spindle_offset+spindle_key_offset]) { 89 | for (angle=spindle_key_angles) 90 | key(angle + holder_key_angle_offset, cut_diameter); 91 | } 92 | // Add clip holders to the base 93 | angle = atan(backing_center_y / ((holder_width-spindle_diameter)/2)); 94 | module clip(dir, offset) { 95 | translate([-dir * holder_width/2, 0, 0]) 96 | rotate(dir * angle, [0, 0, 1]) 97 | translate([dir * offset, holder_clip_width, 98 | holder_arm_depth/2]) 99 | cube(size=[holder_clip_height, 100 | 2*holder_clip_width, 101 | holder_arm_depth], center=true); 102 | } 103 | for (clip_num=[1, 2, 3, 4]) { 104 | clip(1, clip_num * holder_clip_offset); 105 | clip(-1, clip_num * holder_clip_offset); 106 | } 107 | } 108 | 109 | // 110 | // Spindle 111 | // 112 | 113 | module spindle() { 114 | module key_channels(chan_height) { 115 | // Horizontal channels 116 | translate([0, 0, chan_height]) { 117 | angle_swing = holder_key_angle_offset * 2.5; 118 | for (angle=spindle_key_angles) { 119 | rotate(a=angle - angle_swing/2, v=[0, 0, 1]) 120 | rotate_extrude(angle=angle_swing) 121 | translate([spindle_diameter/2, 0, 0]) 122 | circle(d=spindle_key_diameter); 123 | } 124 | } 125 | } 126 | enclosed_len = holder_bevel_depth+holder_arm_depth - holder_spindle_offset; 127 | total_height=spindle_spool_length + 2*enclosed_len; 128 | cyl_sides = 100; 129 | module core_spindle(dia) { 130 | cylinder(h=total_height, d=dia, $fn=cyl_sides); 131 | bearing_bump = 2; 132 | step = 15; 133 | total = 2*360; 134 | step_height = spindle_spool_length / total; 135 | for (i=[0:step:total - step]) { 136 | bb = bearing_bump * (1 - cos(i)); 137 | bb_next = bearing_bump * (1 - cos(i+step)); 138 | translate([0, 0, enclosed_len + i * step_height]) 139 | cylinder(h=step_height*step+CUT, d1=dia+bb, d2=dia+bb_next, 140 | $fn=cyl_sides); 141 | } 142 | } 143 | difference() { 144 | // Main spindle 145 | core_spindle(spindle_diameter); 146 | core_spindle(spindle_diameter - 2*spindle_thickness); 147 | translate([0, 0, -CUT]) 148 | cylinder(h=total_height + 2*CUT, 149 | d=spindle_diameter - 2*spindle_thickness); 150 | // Horizontal channels 151 | spindle_key2_offset = total_height - spindle_key_offset; 152 | key_channels(spindle_key_offset); 153 | key_channels(spindle_key2_offset); 154 | // Vertical channels 155 | for (angle=spindle_key_angles) 156 | rotate(angle, [0, 0, 1]) { 157 | translate([spindle_diameter/2, 0, -CUT]) 158 | cylinder(h=spindle_key_offset+CUT, d=spindle_key_diameter); 159 | translate([spindle_diameter/2, 0, spindle_key2_offset]) 160 | cylinder(h=spindle_key_offset+CUT, d=spindle_key_diameter); 161 | } 162 | } 163 | } 164 | 165 | // 166 | // Holder clip and filament carriage platform 167 | // 168 | 169 | module base_clip() { 170 | clip_z = 10; 171 | clip_width = holder_arm_depth + slack/2; 172 | side_extra = 3; 173 | clip_total_width = clip_width+side_extra+5; 174 | base_width = spindle_spool_length+2*(holder_bevel_depth + holder_arm_depth); 175 | total_width = base_width + 2*side_extra; 176 | holder_angle = 30; 177 | angle_z_offset = 1.5; 178 | angle_y_offset = 1.5; 179 | module rounded_cube(x, y, z) { 180 | edge_radius = 2; 181 | hull() { 182 | translate([edge_radius, edge_radius, 0]) 183 | cylinder(h=z, r=edge_radius); 184 | translate([edge_radius, y-edge_radius, 0]) 185 | cylinder(h=z, r=edge_radius); 186 | translate([x-edge_radius, edge_radius, 0]) 187 | cylinder(h=z, r=edge_radius); 188 | translate([x-edge_radius, y-edge_radius, 0]) 189 | cylinder(h=z, r=edge_radius); 190 | } 191 | } 192 | module inverse_arm() { 193 | z = (clip_z-holder_clip_height-slack)/2 - angle_z_offset; 194 | inset = 1; 195 | module arm() { 196 | translate([side_extra, holder_clip_width+inset, -19]) 197 | cube([clip_width, 19, z+2*19]); 198 | translate([side_extra, inset, z]) 199 | cube([clip_width, holder_clip_width+CUT, 200 | holder_clip_height+slack]); 201 | } 202 | difference() { 203 | arm(); 204 | notch_dia = 2; 205 | notch_y = (holder_arm_height + slack + notch_dia/2 206 | + holder_clip_width+inset); 207 | translate([side_extra, notch_y, z + notch_dia/2 + .5]) 208 | sphere(d=notch_dia); 209 | second_z = z + holder_clip_height+slack - notch_dia/2 - .5; 210 | translate([side_extra, notch_y, second_z]) 211 | sphere(d=notch_dia); 212 | } 213 | } 214 | module grips_and_beam() { 215 | rounded_cube(total_width, clip_beam_width, clip_beam_height); 216 | clip_y = clip_beam_width + slack; 217 | module grip() 218 | rounded_cube(clip_total_width, clip_y, clip_z - angle_z_offset); 219 | translate([0, angle_y_offset, 0]) 220 | rotate([holder_angle, 0, 0]) { 221 | grip(); 222 | translate([total_width, 0, 0]) 223 | mirror([1, 0, 0]) 224 | grip(); 225 | } 226 | } 227 | module main_platform() { 228 | difference() { 229 | grips_and_beam(); 230 | translate([0, angle_y_offset, 0]) 231 | rotate([holder_angle, 0, 0]) { 232 | inverse_arm(); 233 | translate([total_width, 0, 0]) 234 | mirror([1, 0, 0]) 235 | inverse_arm(); 236 | } 237 | } 238 | } 239 | intersection() { 240 | main_platform(); 241 | translate([0, -19, 0]) 242 | rounded_cube(total_width, clip_beam_width+19, 19); 243 | } 244 | } 245 | 246 | // 247 | // Filament tube carriage 248 | // 249 | 250 | module carriage() { 251 | side_thick = 3; 252 | guide_rad = 1; 253 | barrier_thick = 1; 254 | insert_thick = 11; 255 | carriage_space_x = clip_beam_width + slack + 2*guide_rad; 256 | total_x = carriage_space_x + 2*side_thick + barrier_thick + insert_thick; 257 | outer_dia = ptfe_tube_diameter + 5; 258 | carriage_space_y = clip_beam_height + slack + guide_rad; 259 | tube_center_y = side_thick + carriage_space_y + ptfe_tube_diameter/2; 260 | tube_center_z = outer_dia / 2; 261 | total_y = tube_center_y + outer_dia/2; 262 | 263 | module base() { 264 | hull() { 265 | cube([carriage_space_x + 2*side_thick, tube_center_y, outer_dia]); 266 | translate([0, tube_center_y, tube_center_z]) 267 | rotate([0, 90, 0]) 268 | cylinder(h=total_x, d=outer_dia); 269 | } 270 | } 271 | module filament_tube() { 272 | filament_only_dia = ptfe_tube_diameter - .75; 273 | tube_guide_dia = ptfe_tube_diameter + slack / 2; 274 | // Main channel 275 | cylinder(h=total_x + 2*CUT, d=filament_only_dia); 276 | l1 = carriage_space_x + 2*side_thick + 2 + CUT; 277 | cylinder(h=l1, d=tube_guide_dia); 278 | translate([0, 0, l1 + barrier_thick]) 279 | cylinder(h=insert_thick+CUT, d=tube_guide_dia); 280 | } 281 | 282 | difference() { 283 | base(); 284 | // cutout for carriage 285 | translate([side_thick, side_thick, -CUT]) 286 | cube([carriage_space_x, total_y, outer_dia+2*CUT]); 287 | // cutout for tube 288 | translate([-CUT, tube_center_y, tube_center_z]) 289 | rotate([0, 90, 0]) 290 | filament_tube(); 291 | } 292 | // Add in guide protrusions 293 | p_x1 = side_thick; 294 | p_x2 = side_thick + carriage_space_x; 295 | p_x3 = side_thick + 3; 296 | p_x4 = side_thick + carriage_space_x - 3; 297 | p_y1 = side_thick + clip_beam_height/2 + guide_rad; 298 | p_y2 = side_thick; 299 | p_z1 = 2; 300 | p_z2 = outer_dia - 2; 301 | protrusions = [ 302 | [p_x1, p_y1, p_z1], [p_x2, p_y1, p_z1], 303 | [p_x1, p_y1, p_z2], [p_x2, p_y1, p_z2], 304 | [p_x3, p_y2, p_z1], [p_x4, p_y2, p_z1], 305 | [p_x3, p_y2, p_z2], [p_x4, p_y2, p_z2], 306 | ]; 307 | for (pos=protrusions) 308 | translate(pos) 309 | sphere(r=guide_rad); 310 | } 311 | 312 | // 313 | // Object selection 314 | // 315 | 316 | holder(); 317 | //spindle(); 318 | //base_clip(); 319 | //carriage(); 320 | --------------------------------------------------------------------------------