He asks him to sharpen it at both ends with intent of putting one end in the ground and the other end to have Ralphs head on it. This is not explicitly stated in the novel but we know this because of the Lord of the Flies
The pigs head, which was offered to the beast, was mounted on a spear which had been sharpened at both ends. One point to hold the head and one point to stick into the ground. The implication is that Jack intends to behead Ralph and then mount his head on a stick as an offering to the beast.
They warn Ralph that Jack plans to hunt him the next day and that Roger has "sharpened a stick at both ends."
It seems that Roger has become the unofficial second in command to Jack and also chief torturer.
It seems to mean that Jack's presence was drawing out the evil in Roger.
Ralph, Jack, and Roger are very frightened when they finally see the beast.
Roger tells Robert that Jack is going to sharpen a stick at both ends and use it to hunt pigs.
Jack and Roger have sharpened a stick at both ends to hunt and kill Ralph. Their plan is to hunt Ralph like they did with the sow, to terrify him and flush him out. Samneric warn Ralph that they are being hunted and that Jack's tribe will sharpen a stick at both ends and have Roger guard the way in.
Samneric tells Ralph that Roger sharpened a stick at both ends. This means that when they kill him, they will put him on the stick like the pig's head.
Roger and Jack likely intended to use the sharpened stick as a weapon. Its design as a spear with both ends sharpened suggests they intended to hunt or harm someone or something. This weapon could have been used for hunting animals or as a tool to establish power or control over others.
Jack and Roger planned to hunt and kill Ralph as he was the last remaining obstacle to Jack's authority on the island. They intended to use force and violence to eliminate Ralph and solidify Jack's leadership among the boys.
The pigs head, which was offered to the beast, was mounted on a spear which had been sharpened at both ends. One point to hold the head and one point to stick into the ground. The implication is that Jack intends to behead Ralph and then mount his head on a stick as an offering to the beast.
They warn Ralph that Jack plans to hunt him the next day and that Roger has "sharpened a stick at both ends."
This quote is said by Jack to Ralph in William Golding's book "Lord of the Flies." Jack's words foreshadow the increasing hostility and violence that will ensue between the two groups led by Ralph and Jack on the island. Roger sharpening a stick at both ends symbolizes the savagery and brutality that will take over as civilization breaks down.
Jack jumped over the candle stick in the children's nursery rhyme. "Jack be nimble Jack be quick Jack jumped over the candle stick"
It seems that Roger has become the unofficial second in command to Jack and also chief torturer.
It seems to mean that Jack's presence was drawing out the evil in Roger.
-Spoiler warning- The only other time a stick is sharpened at both ends is after Jack killes the sow and offers the head to the beast for protection. It means that Roger wants to murder Ralph, cut his throat, and put his disembodied head on the stick as an offering to Satan.