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Zenport Grafting Tool Blade ZJ68-A Replacement V-Cut Top Grafting Blade for Grafting Fruit Trees and Vines

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Zenport Grafting Tool Blade ZJ68-A Replacement V-Cut Top Grafting Blade for Grafting Fruit Trees and Vines. Quickly and easily create professional quality grafts. The clean cuts made by the grafting tool allow you to get a perfect fit, every time.

Makes compatible cuts on both scion and root stock. This increases the likelihood of the graft 'taking', leading to much less wastage. Save 50% of labor costs, users report 90% or higher success rates. Use in the field, or bench mount. Designed for durability and a wide range of graft sizes. Even beginners get professional results. Steel hardened "V" cut blade for clean cuts, perfect match. Tempered steel blades, handles wood from 1/8 in. to 1 and 3/16 in., for both soft and hard wood.

Use in the field, or bench mount. Designed for durability and a wide range of graft sizes. Even beginners get professional results. Steel hardened "V" cut blade for clean cuts, perfect match. Tempered steel blades, handles wood from 1/8 in. to 1 and 3/16 in., for both soft and hard wood.

The Zenport ZJ68 V-Cut Top Grafting Tool is a precision instrument consisting of two blades, made of hardened steel, which can be removed, sharpened or replaced. The, anvil is grooved and positions the grafting wood in the centre to provide a precision cut.

The handle operates like a pair of pliers, and is spring loaded to open, ready for the next cut. The grafter can be bench mounted, or used loose for fieldwork.

To operate the grafter, the stock is first placed on the anvil and a "v" groove is neatly sliced out.

The scion wood selected is next positioned from the other side of the grafter, and sliced. The resultant cut matches perfectly with the rootstock.

It's important the selected scion wood is of similar size as the stock to be grafted. This ensures the cambium layers fit neatly together.

The Zenport ZJ68 V-Cut Top Grafting Tool is suitable for grafts from three millimetres to thirty millimetres. This graft is then taped as normal, and the operation completed.

With the addition of the foot-operated Bench Mount the grafting procedure is greatly speeded. This accessory was designed for vineyards, orchards and nurseries that perform both bench grafting and field grafting.

The bench mount is attached to the workbench and the grafter is clipped into the mount with the blades facing the operator. A foot lever then operates the tool. With this accessory, daily throughput of bench grafts is more than doubled and the tool can be disengaged from the bench mount for fieldwork in less than a minute.

Zenport ZJ68 V-Cut Top Grafting Tool Operation

  1. Place rootstock up under skirt of blades with the rootstock positioned to the right hand side of Zenport ZJ68 V-Cut Top Grafting Tool to ensure the female V is in the rootstock.
  2. Holding rootstock in both hands depress the pedal down and bringing blades and wood down onto centre anvils. Ensure the rootstock is brought down into the grooved area of the anvils.
  3. As the blades slice through the wood gently, pull either side of the rootstock outwards away from the blades ensuring a clean cut.
  4. Once this initial cut to the rootstock is completed choose a your scion wood which fits the diameter of the rootstock.
  5. Repeat cut ensuring that this cut is reversed with bud of Scion wood positioned to the left hand side of Zenport ZJ68 V-Cut Top Grafting Tool.
  6. Once both cuts are completed, place the scion wood inside the V of the rootstock and tape all areas of the graft to protect cut and reduce air. This will ensure maximum cambium contact giving strong, tidy grafts.
  7. Re-sharpening and polishing of the blades regularly will preserve blade condition.

Holding the Grafting Stock
It is recommended that when grafting the rootstock this should be held in two hands. The rootstock should be held on the side of the stock firmly between thumb and forefingers of each hand. Ensure fingers are a safe distance from the blades as the cut is completed. As the cuts is made the operator should pull hands outwards helping the graft to separate.

As the cut is completed, the operator should help the cut separate. The operator fingers should never touch the anvils or blades while cutting action is performed.

Bud cutting/scion should be performed with fingers either side of the bus ensuring again that the fingers do not touch the anvils or blades as the cut is completed.

Sharpening Blades
Remove from the machine and sharpen. Pay particular attention to tip area. We suggest that the best method to sharpen is to simply polish blade face and edge with a fine grade wet and dry sand paper, and to lightly steel with ordinary kitchen knife steel.

Blade Angle
Reposition blades to machine. Adjust blade angle e.g. bottom in or out. There is no set position for this and is purely an operator adjustment. An operator once familiar with sharpening and installing blades will be aware that when adjusting this angle a difference in cut can be detected. This is at times advantageous when grafting various sizes of wood.

Blade Installation Procedure
Fit blades to machine, at this stage do not fully tighten screw. Hold blade tips together and tighten screws evenly until the blades barely tension. Place thumb and forefinger under the face of blades and hold blades in an upward position. Slightly tighten the two bottom screws while maintaining this upward pressure. Slightly tighten the two top screws. Repeat the procedure until blade screws are tight. It is not necessary to over tighten blade screws.

Dress Blade Tips
As blades (which are under tension) settle it is not uncommon on some woods to leave a slight chipped effect on the rootstock. This is due to a slight spreading effect of tips. To over come this, dress the front of the blade tip area with a fine file. Once this has been completed sand the blades placing emphasis in the tip of the blade and area making the cuts.

For sanding we recommend using light sandpaper such as wet and dry P400 that has been dipped in methylated spirits. Using methylated spirits will breakdown the sap build up on blades and ensure a clean cut of grafting stock.

Check Anvil Alignment
Male anvil should be slightly proud of V anvil. If this is not so, remove the anvil and hold extended section in vice and form.

Remove Blades
Zenport recommends that blades on the tools are removed or loosened at the end of each grafting season. The Zenport blades work under tension and if left on tools for extended periods will loose blade tension causing blades to "split" as cuts are executed and discontinue to complete cuts as previous.

To Reset Blades

  1. Initial attachment of blade is to be that of blade closest to shaft. Place both screws in loosely. Tighten top screw first by applying pressure to blade to push the top of blade in an outward movement and bottom of blade inwards.
  2. Repeat process with blade closest to operator. Before tightening this should be held slightly proud of first blade. As screws are tightened the blade will drop in to place forming a "V" ready to perform cuts. Note Do not over tighten screws, as they will be removed repeatedly.
  3. Affix attach female anvil loosely then move blades to the lowest position. Centre female anvil to the point of the blades then tighten female anvil.
    Once more move blades to the lowest position and affix the male anvil. Centre this so that as blades do not touch anvil as manoeuvred.
  4. Slowly release blades from lowest position ensuring that no part of the blade touches anvils as the knife carriers moves. Trial cut with no grafting stock again ensuring that no part of the blade touches anvils.
  5. Trial cut with unwanted stock. If blades do not complete cut without touching blades reset male anvil positioning. Note if blades are continually hitting anvils blades will rapidly become blunt hindering the potential graft take.



Reasons for grafting and budding:



  • Perpetuate clones. Clones of numerous species cannot be economically reproduced from vegetative cuttings because the percentage of cuttings that root successfully is low. For example numerous clones of Japanese maple that either root poorly or lack an extensive root systems are grafted onto the seedling of an Acer palmatum rootstock.
  • Take advantage of particular rootstocks. Certain rootstocks have superior growth habits, disease and insect resistance, and drought tolerance. For example the French crabapple can increase resistance to crown gall and hairy root in apple trees.
  • Increase the growth rate of seedlings. The seedling progeny of many fruit and nut breeding programs may require 8 to 12 years to become fruitful. However, if these progeny are grafted onto established plants, the time required for them to flower and fruit is reduced dramatically.
  • Repair damaged plants. Large trees or specimen plants can be damaged easily above the soil line. The damage can often be repaired by planting several seedlings of the same species around the injured tree and grafting them above the injury.
  • Change varieties or cultivars. Newer varieties of trees may offer improved insect or disease resistance, better drought tolerance, or higher yields. As long as the scion is compatible with the rootstock, the older orchard may be top worked using the improved variety or cultivar.
  • Produce certain plant forms. Numerous horticultural plants owe their beauty to the fact that they are grafted or budded onto a standard, especially those that have a weeping or cascading form.
  • Optimize cross-pollination. Certain fruit trees are not self-pollinating; they require pollination by a second fruit tree through cross-pollination. To ensure good fruit set on the female (pistillate) plant, a male (staminate) plant must be growing nearby. Where this is not possible, the chances that cross-pollination will occur can be increased by grafting a scion from a male plant onto the female plant.

Unlike budding, which can be performed before or during the growing season, most grafting is done during winter and early spring while both scion and rootstock are still dormant.

  • Model: ZJ68A
  • Manufactured by: Zenport

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This product was added to our catalog on Thursday 26 June, 2014.

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