Whip and Tongue Grafting Tool
Description
This tool is designed to allow you to make the 'tongue' cut in Whip and Tongue grafting (https://ptes.org/campaigns/traditional-orchard-project/orchard-practical-guides/grafting/whip-and-tongue-graft/) quickly and easily. This tool uses a Stanley 1992 (or equivalent) utility blade. (https://www.amazon.com/Stanley-11-921A-Classic-Blades-Dispenser/dp/B0006HVTSO) Tool Setup: Carefully insert the utility blade into the slot in the tool (Image001) and press the blade all of the way in using the push stick (Image002.) To replace a dull blade, remove the blade by pushing it in the opposite direction with the push stick until it can be grasped with pliers and pulled out. Be extremely careful when handling the blade and keep the cap snapped on the tool when not in use. How to use: Cut both pieces (rootstock and scion) to be grafted at a 15 degree angle (Image003.) I suggest using this Grafting Knife design (https://www.thingiverse.com/thing:729571) by christianegholm (https://www.thingiverse.com/christianegholm) to make your 15 degree cuts easily and accurately. Select the appropriate cutting hole to use by comparing the branch with the indents next to each cutting hole. Place the branch into the cutting hole with the bark side of the cut against the side of the hole next to the indent and the cut side aligned against the blade (Image004.) Press the branch down on the blade until the top of the cut is even with the top of the hole (Image005.) A slot will be cut into the branch (Image006.) Repeat for the second piece to be grafted. Slide the two pieces toghther so that the slots interlock (Image007) and continue pressing until the bark layer is aligned (Image008.) Complete the graft by wrapping the grafted area with grafting tape. See the website at the top of this document for more information on the Whip and Tongue grafting technique. Printing: I printed this tool on a Creality Ender-3 V3 KE using generic PLA filament and the default 0.20mm Standard settings in Creality Print 6.0. No supports are necessary, however you may want to add a brim to the Push Stick part if there are adhesion problems.
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