Locked brummel is a type of splice. It is self locking.
https://www.animatedknots.com/brummel-eye-splice-knot
Long bury splice
https://www.animatedknots.com/long-bury-splice-knot
Lock stitch is a stitch used to lock a long bury splice For a critical breaking strength , stitching adds nothing. movement, shaking, and inquisitive fingers, may displace the tail – even pulling it completely out of the rope – wrecking the ability of the splice to withstand a maximum load. The recommended stitching is a serpentine zigzag right through the rope and buried tail. This stitching is made up in one direction followed by a similar return pattern back down with the rope rotated 90 degrees.
Bury is the end of the rope that is fed back in to the middle of the rope the length of the buried tail should be 72 times the rope’s diameter. This is about three and a half full fid lengths (a full length fid is 21 times the rope’s diameter.) The very slippery Spectra and Dyneema require this long bury.
Make sure you taper the end of the tail. A tail with no taper creates a weak point because the square end of the buried tail abruptly
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