Chef's Choice specializes in electric knife sharpeners for professional and home kitchens. With these sharpeners, the edge of your kitchen knife can be sharpened within 15 to 30 seconds, and you will save time and money by not having to send your knives to be sharpened by a professional.
underStandIng the model 312
dIamond ultrahone
®
Sharpener
This unique Chef’sChoice
®
Diamond UltraHone
®
Sharpener is designed to sharpen knives with
either straight or serrated edges. This two (2) stage sharpener has two precision sharpening / honing stages, one with fine and the other with ultrafine 100% diamond abrasive. This combina- tion can be used to create either an ultra sharp, smooth faceted edge for effortless cutting and presentations or one with a selected amount of residual “bite”. The sharpening and honing actions are controlled by using precisely angled guides for the blade and precisely matched conically surfaced abrasive disks. The sharpening angle is slightly larger in Stage 2 than in Stage 1. The sharpening rate is carefully controlled by the size of diamonds used and by unique internal springs that limit the amount of pressure that can be applied to the edge by the abrasive disks. Fine diamond-coated conical disks in Stage 1 create microgrooves along the facets on each side of the edge establishing the first angled bevel of the edge. In Stage 2 precision disks coated with micron sized diamonds gently hone and polish the facets immediately adjacent to the edge creating a microbevel along a microscopically thin straight and polished edge. The honing ac- tion simultaneously polishes and sharpens the boundaries of those microgrooves created by the diamond abrasives in Stage 1 adjacent to the edge until they become sharp micro flutes that will assist the cutting action with “difficult to cut” materials. This unique two stage design gives you an extremely sharp edge and because of the second angle microbevel, you will notice that your knives stay sharp longer than those sharpened by conventional means. The following sections describe the general procedures for optimal sharpening. One of the im- portant advantages of using the Model 312 is that you can hone and polish your knives to razor sharp edges as often as needed and yet experience little knife wear compared to older sharpen- ing methods. Resharpening can commonly be done by using just the gentle ultra honing action of Stage 2. (See Resharpening Section). Each sharpening Stage is equipped with gray flexible plastic springs that are positioned over the sharpening disks (see Figure 1) to hold the face of your knife securely against the precision guides in the right and left slots of each stage during sharpening.
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In each, the first and second stage, both
sides of the edge are sharpened simultane- ously by two precision diamond coated conical honing disks. The orientation of the disks is such that by sharpening in both stages the entire length of the edge is sharpened.
Small rubber feet secure the Pronto
®
to
any dry clean surface. The soft touch handle further reduces the opportunity for slippage while sharpening.
USING PRONTO
®
Note: Always clean your knife before sharpen-
ing in the Pronto
®
!
You will find that the Pronto
®
can create and
maintain an exceedingly sharp and effective edge on all your conventional fine edge and serrated cutlery. The primary edge facets are each formed in Stage 1 at a nominal 20 degrees which results in a total primary edge of 40 degrees. Stage 2 creates a second bevel at a slightly larger angle leaving a strong double beveled edge structure that will stay sharp longer.
Always use the sharpener with the stage
numbers 1 and 2, facing you.
Safety: Keep your fingers clear of the
blade edge at all times. Hold the handle with your left hand making certain that all your fingers and thumb remain safely behind the partition wall where the handle attaches to the sharpening stage.
STAGE 1 To sharpen, hold the sharpener on the table with your left hand. Insert the knife blade into
the slot of Stage 1. Press down to bring the knife edge into firm sustained contact with both of the two internal diamond coated disks and slide the blade back and forth in a sawing- like motion. For optimum results center the blade left to right in the slot and avoid rubbing against the walls of the slot. Apply a downward force of about 4-5* pounds as you move the blade. Listen carefully to the disks to insure they are rotating when you move the blade. Sharpening will not be as effective if you press too lightly while sharpening.
If your knife, before sharpening, is not very
dull you may find that only about 10 or less back and forth stroke pairs in Stage 1 (with recommended downward pressure) will be sufficient to put a keen edge on the blade. However, if the knife starts out very dull you may find that 20 or more back and forth paired strokes will be needed the first time as you reshape and sharpen the old edge. Before leaving Stage 1 check the edge for sharp- ness by slicing a piece of paper. It should cut paper readily with only a slight roughness to the cutting action.
* 4 to 5 pounds is about the weight of a 2 inch thick
telephone book
STAGE 2 If the knife is correctly sharpened in Stage 1 only 2-3 back and forth stroke pairs in Stage 2 will complete the small second bevel and Window exhaust fan. the edge will be very sharp and effective. It should cut paper smoothly allowing you to make straight or curved cuts easily.
For optimum results center the blade
(left and right) within the slot and keep the
Congratulations!!
The Pronto
®
Diamond Hone
®
manufactured
by Chef’sChoice
®
, the worlds leader in cutting
edge technology, is an exceedingly fast manual sharpener that will create an exceptionally effective cutting edge on all of your conven- tional household cutlery. The cutting edge is finely honed to extreme sharpness but retains strong microscopic teeth that gives it a highly effective bite for all your food prep needs and especially for fibrous materials. The edge is surprisingly durable yet can be resharpened quickly whenever necessary.
You will be pleased to see how easy the
Pronto
®
is to use and how well your knives
perform. Read and follow the instructions carefully. Keep the sharpener close at hand so that you can enjoy the pleasure of sharp knives every day.
DESCRIPTION OF THE PRONTO
®
You will appreciate that the soft touch ergo- nomical handle of the Pronto
®
is extremely
comfortable providing a secure grip. There are two slots, the first (#1) uses fine diamond abrasives to create and hone a sharp primary edge and a second slot (#2) where that edge is ultrahoned at a slightly larger angle with micron size diamonds to its final sharpness.