Not mounting is a real option
Nothing obliges you to mount a loose sheet. There are clear conditions under which filing is the better answer.
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- Lots of double-page sheets. Paper across the fold takes strain every time the book opens
- Sheets of many different sizes. Mounted, the uneven margins look less settled, not more
- You do not want the book to thicken. Covers and cases stop fitting
- You may want to reorder them. Mounted sheets do not move
- You want them apart from the brushwork. Written pages and pasted pages stay separate
If you do mount, the method is in mounting a kakioki sheet. Doing both is perfectly reasonable, and brushwork in the book, sheets in a file is in practice the tidiest split of all.
Choosing the holder
Choose by sheet size, not book size. Get that backwards and what you buy will not work.
| Sheet size | What fits | Note |
|---|---|---|
| Single page, approx. 16 x 11 cm | A5 clear file, dedicated goshuin holder | Widest choice by far |
| Double page, approx. 16 x 22 cm | A4 landscape, double-page holder | Will not go into A5 |
| Large-format single page | Tight in A5; B5 is safer | Measure before buying |
| Irregular or cut-paper | Heavy holder with a backing board | Thin pockets let them crease |
Dedicated holders are cut to goshuin proportions, and those with backing boards keep sheets from curling. They cost more, and the advantage grows with the number of sheets.
Will hundred-yen shops and Muji do?
They will. Given the right dimensions there is almost no practical difference from a dedicated product.
Worth looking for in a hundred-yen shop
- A5 clear pocket files, for single-page sheets
- A4 clear files, for double-page sheets laid landscape
- Photo pocket albums, where the pocket size is close
- Rigid card cases, to stop creasing while you carry sheets home
Worth looking for at Muji
- Polypropylene card holders and albums
- Polypropylene divider files
Test with an actual sheet before buying. "Fits A5" may mean external or internal dimensions, and a few millimetres decides it.
Long-term storage
Filing is gentler than mounting, with three cautions.
- Avoid PVC pockets. Plasticiser migrates into paper and causes tackiness and staining over time. Choose pockets marked polypropylene
- Do not overfill. Sheets crease from the corner going in and out. One sheet per pocket
- Keep it dry. A tightly closed file holds moisture inside. Site it the way you would site the book
Where to keep things is covered in storing your goshuin book. The back of a cupboard and anywhere near the floor are as bad for files as for books.
Getting the sheet home
Filing happens at home, but the outcome is decided on the day.
- Do not fold it. A crease is permanent. Never straight into a bag
- Carry a thin clear file always. One sheet of plastic removes the whole problem
- Keep it dry. Ink and seal paste run, and they do not come back
- Lay it flat when you get in. It may have picked up moisture; let it dry before it goes into a pocket
A thin file kept permanently in your pouch is the reliable version of this. Pouches are covered in pouches, cases and carrying.
Read next
Practice around goshuin and the books that hold them differs between shrines, temples and Buddhist schools. What follows is general orientation, not a rule. Notices posted on site and the guidance of the office there always take precedence. Nichiren-shu temples inscribe a goshuimon, and some will not write it into a book that already holds entries from elsewhere.
Frequently asked questions
Do loose goshuin sheets have to be mounted?
No. Filing suits you better where sheets are often double-page, where sizes vary, where you do not want the book to thicken, or where you may want to reorder them. Brushwork in the book and sheets in a file is in practice the tidiest arrangement.
How do I choose a file for loose sheets?
By the sheet, not the book. A single-page sheet is about 16 x 11 cm and goes into A5; a double-page sheet is about 22 cm wide and does not, so you need A4 landscape or a double-page holder.
Are hundred-yen shop files good enough?
With the right dimensions, there is almost no practical difference. A5 clear pocket files and photo pocket albums both work. Bear in mind that "fits A5" may refer to external or internal dimensions, so test with a real sheet first.
Which materials should I avoid for long-term storage?
PVC pockets. Plasticiser migrates into paper and causes tackiness and staining over the years. Choose pockets marked polypropylene instead.
What should I be careful about carrying a sheet home?
Not folding it, because a crease is permanent. Carrying a thin clear file removes the risk entirely. Keep it dry, and when you get home lay it flat to dry before it goes into a pocket.
