3" Fire Check Block For Essential Hinge Jig
Benchdog Tools
£26
Fire check block for the use of fitting fire doors when an additional hinge is required, 100mm from the top hinge. Colour-coded red for 3-inch 1 x fire check block for 3-inch hinges. Please note: You will need a guide bush that is 4mm larger than your cutter, not made for router bits with a bearing. So if using a 12mm, then 16mm would be required. If using a 12.7mm, you would need a 16.7mm. Please do not use a 16mm with a 12.7mm cutter, as this will damage the blocks. Orders placed from the 7th of November 2023 will already receive these Thumbscrews with your Essential Hinge Jig
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