Category Archives: board slotting

Board Slotting at John Hopkins Department of Conservation

Jennifer Jarvis, Conservator in the John Hopkins Department of Conservation and Preservation, demonstrates how fun book conservation is using the Peachey Board Slotting Machine.

John Hopkins Department of Conservation and Preservation recently acquired a Peachey Board Slotting Machine as another technique in their book conservation arsenal to reattach detached boards. Detached boards are likely the most common place books fail. This machine accurately cuts a very small slot, as thin as .015″, to allow a hinge to be inserted without disturbing the covering material or obscuring evidence of lacing, board attachment, etc…. The machine is manually operated, and can accommodate boards up to a 18″ high. The start and stop of the slot is controlled by setting adjustable stops.

No matter which side of the fence you are on regarding the use of leather in book conservation, board slotting with a cotton or linen hinge is a strong and durable base. The fabric can be left alone or colored with acrylics for fast repairs. Or board slotting can be combined with other treatments — such as tissue repairs, cast acrylic repairs, and leather onlays — to achieve a high degree of aesthetic integration. Board slotting is especially suited to nineteenth century leather bindings with a made hollow. More information on different structures for board slotting.

Contact me for a price quote.

Jennifer Jarvis aligning the height of the blade where it will begin making the slot. This is much easier on the new machine, since you can sight the length of the board from the end of the machine.


Manual Peachey Board Slotting Machine

Board slotting is likely the strongest and least invasive method of treating detached boards. Detached boards are the most common point where bookbindings fail.  Christopher Clarkson developed the technique in the late 1970’s. The board slotting tab at the top of this page and the board slotting blog offers more information concerning its history, technique and recent advances.

The original Peachey Board Slotting Machine, developed in 2005, is used in conservation labs around the world. It is, however, a somewhat large and expensive machine, and best suited for large institutions. The Manual Peachey Board Slotting Machine is a new affordable alternative for individuals, regional centers, smaller institutional labs and even larger labs with space limitations. This smaller machine can be moved out of the way when not in use, freeing up valuable bench space. It is also simpler to operate.

The Manual Peachey Board Slotting Machine features stops that automatically guide the positioning of the blade when starting and stopping a cut. In order to make this machine more affordable, three aspects are limited as compared with the original machine: the maximum length that can be slotted is 15″ (rather than 17.75″), the board needs to be manually pulled or cranked using a hand wheel, and the angles for slotting are not infinitely adjustable, but can be set at 11, 13, and 15 degrees. These are the most common angles used. In fact, I use 13 degrees about 90% of the time, 11 for very thin boards, and 15 for thick ones.

This machine is less intimidating when compared to the original. The orientation makes it easier to sight the height of the blade. The carriage can be quickly pulled back into starting position after the end of a previous cut. This also makes partial (or biscut) slotting of a board very fast and easy. Overall, the slotting operation seems to be quicker. Many bookbinding and conservation students, such as those from North Bennett Street School, have been trained in the fundamentals of board slotting.  A one to three day workshop on machine operation, basic slotting technique and structures is recommended, though.



-Width of the machine -12″, Height- 19″, Length- 22″

-Weight 30 lbs. Easy to move and store when not needed.

-Fast and intuitive operation.

-The sliding board carriage can be quickly moved to the starting position at the end of a slot, or between biscuit slots.

-Maximum height of board that can be slotted: 15″

-Dust collector hooks up to a standard vacuum cleaner.

-Thick and thin solid carbide blades included for long cutting life.

-Automatic blade positioning for starting and stopping a cut.

-Boards can be slotted by pulling or cranking.

-Safety guards (not pictured) keep hands away from the blade in use.

-The motor, and other operations are similar to the original machine.

-No electrical transformer needed for international operation, just plug adaptors.

-This machine can be shipped pre-aligned, but still needs some assembly.


I have a machine in operation at my NYC studio if you would like to examine and give it a test drive. Please contact me if you have questions or need a formal price quote including shipping, assembly and training.

Introductory Price:  $4,950.00  (Regular price $5,500.00)