Drill Guides

Here you will find our Drill Guides.
These guides ensure straight through drilling of props and spinner backplates. TBM offers several versions. Many include a screw and washer to hold the prop or spinner backplate in place for accurate drilling. Simply put the prop or spinner backplate on the 10mm stub, then tighten using the screw and washer. Use of a drill press is best, though a hand drill can be used. We recommend drilling the backplate and prop at the same time if they are new. Stack the backplate, prop and drill jig together so that the drill jig is on the spinner backplate. It is best to drill from the backplate into the propeller because this will minimize the issues on the front side of the backplate as the drill bit exits the backplate. Be sure to use a sharp drill bit as this will also minimize the issues when the drill bit exits the part. Only drill through the backplate and about three quarters of the way through the prop. Then remove the drill jig, and rest the prop on a piece of hardwood and drill the rest of the way through the prop. Check the first hole’s exit. If the hole is not clean on the exit, you may prefer to put the drill jig on the front side of the prop. Use the one hole to line up the drill jig properly by installing a screw, then drill the remaining holes. This will make a cleaner hole.
These guides ensure straight through drilling of props and spinner backplates. TBM offers several versions. Many include a screw and washer to hold the prop or spinner backplate in place for accurate drilling. Simply put the prop or spinner backplate on the 10mm stub, then tighten using the screw and washer. Use of a drill press is best, though a hand drill can be used. We recommend drilling the backplate and prop at the same time if they are new. Stack the backplate, prop and drill jig together so that the drill jig is on the spinner backplate. It is best to drill from the backplate into the propeller because this will minimize the issues on the front side of the backplate as the drill bit exits the backplate. Be sure to use a sharp drill bit as this will also minimize the issues when the drill bit exits the part. Only drill through the backplate and about three quarters of the way through the prop. Then remove the drill jig, and rest the prop on a piece of hardwood and drill the rest of the way through the prop. Check the first hole’s exit. If the hole is not clean on the exit, you may prefer to put the drill jig on the front side of the prop. Use the one hole to line up the drill jig properly by installing a screw, then drill the remaining holes. This will make a cleaner hole.
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