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slip-on hot-end fin sleeve for a 2 in closed end

slip-on hot-end fin sleeve for a 2 in closed end: cup, bore Ø50.8 with the closed end's 1.5 round inside its bottom, wall 2, bottom 2, 45.0 deep; 9 ring fins Ø76 × 1.5 at 5 pitch

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

feature	bore
value	Ø50.8

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From the full sheet

Slip-on fin sleeve for a 2 in closed hot end (nine Ø76 ring fins): every size, notes, mating features and sources. How do I add fins to a plain tri-clamp hot end?