Hatch Pulls
Posted: May 2nd, '09, 15:02
For those that missed the discussion of hatch pulls on the "Swap and Sell" section of the board, and as a follow up for those involved, here a quick series of images on how they are made and work:
This example is for the double pull that would be needed for a larger hatch cover such as a fish box lid.
I've turned down the hex heads of two 1/4x20 2" bolts to be about 1/16" high and 3/8" in diameter. The parts are clamped tightly to a welding table and TIGed at 1 amp fusing with a series of 1 second shots.
The holes in the hatch cover are drilled slightly over sized and heavily counter sunk to accept the fillet of the weld, allowing the plate to lay flat.
Next, using a hole saw, cut out pockets on the underside of the hatch to accept 3/4" PVC end caps.
Flatten the top of the PVC cap and embed it using thickened resin,
Clean up excess resin including the countersunk holes on the hatch top.
Flush the caps down nearly to the hatch surface and re-drill the holes from the top surface.
The rest is cosmetics....
For lighter/smaller hatch covers, just a single round disc is used and as small as a #10 flat head machine screws can be used for the pin.
Br,
Patrick
This example is for the double pull that would be needed for a larger hatch cover such as a fish box lid.
I've turned down the hex heads of two 1/4x20 2" bolts to be about 1/16" high and 3/8" in diameter. The parts are clamped tightly to a welding table and TIGed at 1 amp fusing with a series of 1 second shots.
The holes in the hatch cover are drilled slightly over sized and heavily counter sunk to accept the fillet of the weld, allowing the plate to lay flat.
Next, using a hole saw, cut out pockets on the underside of the hatch to accept 3/4" PVC end caps.
Flatten the top of the PVC cap and embed it using thickened resin,
Clean up excess resin including the countersunk holes on the hatch top.
Flush the caps down nearly to the hatch surface and re-drill the holes from the top surface.
The rest is cosmetics....
For lighter/smaller hatch covers, just a single round disc is used and as small as a #10 flat head machine screws can be used for the pin.
Br,
Patrick