Staggered print sheet holder - OpenSCAD customizer - HSW support

About

OpenSCAD designed and customizable print sheet holder.

• Supports any print sheet size (max 2mm thickness).

• Support 1 to 25 (or more) print sheets.

• Screw and HSW mountable.

• HSW orientation for horizontal and vertical sheet loading.

• Support to attach HSW panel.

• 168 STLs and OpenSCAD customizer presets for common print sheet and utilitarian sizes with configuration variants.

Why?

Yeah, euhm... print sheet holder has probably been solved plenty. But I wanted one that would allow me to load them sideways, could be screw mounted and have a HSW panel attached to the front. I also wanted full coverage on top to reduce dust and other crud accumulating and at the bottom so it would snag when being (un)loaded.

Then I wanted to make it configurable as I wanted a couple of variants; a single rail in PC to store warm plates on the side of my Core One L roof rack, a top-loaded one for the HSW side panels of my K1C to store print sheets for that printer. And then things got a bit out of hand, maybe it'll be of some use to you. In which case I'd love to see your make. And if this was useful to you a like is appreciated.

Available files

• Print files: Core One L 8x sheet with screw mount and HSW front panel: G-code included is for 8x 300mm print sheet holders, screw mounted with split HSW front. A HSW panel to mount to the print sheet holder front is included as well as well as the attachments. This is my config / print.

• Model files: Core One L 8x sheet with screw mount and HSW front panel: the files for the above generated G-Code.

• Additional model files: utilitarian sheet sizes, sheet numbers and configuration options.

  • sheet count x sheet size variants for common print sheet sizes / sane amounts,

  • shorty sheet count x length for shorter HSW print sheet holder models,

  • stubby sheet count x length for even shorter HSW print sheet holder models. HSW mounting these might be a bit iffy the higher the sheet count.

• OpenSCAD: see OpenSCAD section below.

Print considerations

I printed the 8x sheet holder and HSW panel in eSun PLA+, it's good enough for what it is used for. If you plan to store sheets that might still be warm, consider using another material bit consider that warping may become a factor.

I printed a 1x300mm HSW back variant and attached it to my Core One L roof rack, this allows me to store a warm print sheet while it cools without risking any deformation of the PLA holder.

When using split HSW front attachments, slice a small test print first of a single attachment as supports are a bit finicky. Auto-generated support might be good enough but consider painting some on the lower edges to give them a better chance. See images for a reference.

Print settings

• nozzle: 0.4mm

• layer height: 0.2 (balanced)

• infill: 15% gyroid, it'll help reduce warping and seems to be rather efficient in filament use compared to other common infill patterns.

• walls: 2

• top / bottom layers: 5 / 3

• supports: auto-generated, see also consideration above

• brim: strongly suggested when printing for anything not PLA / prone to warping

Bill of materials

It all really depends on variant, including size and orientation.

You can just print a single holder and call it a day, mount it to HSW or with a couple of screws and it should be fine. 3mm flathead screws should work nicely if you opted for a screwhole variant, just make sure that the screw head does not protrude so it cannot damage the print sheets. 

For the split HSW attachments to the front of the print sheet holder, use M3x6mm or M3x8mm socket screws. This will expand the attachment into the HSW inserts, proving a tighter grip.

HSW attachments / panels will be needed if you want to mount it on HSW or mount HSW on it, G-code is available for the parts I printed. If you went down the HSW route, I suspect you know what you need and where to get it. If not, check the HSW files and  fasteners files, if you're into OpenSCAD I recommend the HSW attachments lib, and consider my HSW wall and attachments lib  for creating custom HSW panels.

OpenSCAD

OpenSCAD, my HSW library and BOSL2 library is required (install info) to make use of it. Read more about OpenSCAD libraries. A presets JSON file is available as well but not required if you just want to jump in and do your own thing.

Usage

1. Download the print-sheet-holder.scad file.

   1. Optionally download the OpenSCAD presets file print-sheet-holder.json.scad. Remove the .scad file extension so it is a JSON file and place it next to the actual .scad file.

2. Open the .scad file in OpenSCAD.

3. Customize as needed with the Customizer window. This should open by default to the right. If not, click the Window menu and make sure Customizer is checked.

Customizer

Part render options

The include mirror option will render the print sheet holder twice, one will be mirrored so the model does not need to be altered in the slicer to mirror the original. An original and mirror variant are needed to have a bottom+top or left+right print sheet holder.

Use the assembly position option to, roughly,  position both parts depending on the sheet size. This should not be considered a replacement for actually measuring things out though.

Sheet configuration

Configure the size (length) and amount of print sheets to hold.

HSW configuration

Enable or disable HSW attachments to the print sheet holder back and / or front.

hsw_front_split can be toggled this will enable or disable the front HSW attachments to be split so an M3x6mm socket screw can be used to lock HSW attachments in place more securely.

hsw_orient_sideways can be used to control HSW orientation, facilitating loading print sheets from the top or the side with a regular HSW panel orientation.

hsw_back_offset allows the back HSW to be moved along the sheet holder.

Screw configuration

Screw holes can be enabled using screw_holes, number of screw holes with screw_hole_count.

screw_hole_offset allows fine-grained control over screw hole positioning while screw_hole_spacing allows control over spacing between screw holes. 

Changelog

• 2026-04-28: initial version