What to know
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Travel to Sunstone Island to locate the NPC named Merlin.
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Speak to Merlin to gain access to the Chasm area.
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You may need to provide Merlin with shards obtained from rifts to enter the Chasm.
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Once inside the Chasm, head to the mine shaft area to start fishing.
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Using Magnet Bait can increase your chances of catching iron chunks.
In the Roblox game Fisch, Iron Chunks are a valuable resource that players often need for various upgrades and crafting. While they might seem elusive at first, obtaining them is a straightforward process once you know where to look and who to talk to.
How to get Iron Chunks in Fisch
Follow the steps given below to reach the Mineshaft on Sunstone Island and start fishing for Iron Chunks:
Merlin’s Location on Sunstone Island
Merlin is the key NPC who lets you enter The Chasm, so your first goal is to find him on Sunstone Island. Once you unlock this route, you can return there anytime to go back into the Mineshaft and keep farming Iron Chunks. Here’s how:
Step 1: Sail or travel to Sunstone Island
Head out on your boat from your current island and navigate to Sunstone Island, which is one of the main islands in the Chasm update area.
Step 2: Go up to Merlin’s house
Once you arrive, walk up the island and look for the ladder that leads to a small house on the higher level of Sunstone Island.
Climb the ladder and move straight past Rhea, then turn left until you see the “Merlin” name tag above the house.
Step 3: Talk to Merlin for Chasm access
Interact with Merlin and scroll through the dialogue options until you see the one that lets you enter The Chasm, such as “I need to enter the chasm.”
If this is your first time, you may need to progress his quest and give him shards gained from Rifts to fully unlock his Chasm-related buffs and access.
How to enter The Chasm and reach the Mineshaft
Next, you must get to the Mineshaft in The Chasm.
Step 1: Dive to the Mineshaft underwater
Just in the waters nearby, dive underwater to get to The Chasm.
Step 2: Follow the tunnels toward the Mineshaft
Inside The Chasm, move through the cave paths and look for the Mineshaft area, which contains a distinctive pool where players commonly fish for Iron Chunks.
Treat it like a dedicated fishing room—if you are in a tunnel with a large pool and mining theme, you are in the right place.
Step 3: Stand by the Mineshaft pool to fish
Stand at the edge of the water in the Mineshaft so your rod can cast into the pool. This specific pool is where Iron Chunks are part of the loot table and can be caught as a common item.
How to catch Iron Chunks
While you can catch iron chunks with standard gear, using specific bait can be very helpful.
Step 1: Use magnet bait for better consistency
Magnet bait works well in The Chasm and is a good default choice for Iron Chunk farming in the Mineshaft. It helps attract items and makes it easier to keep the bar filled with catches, including Iron Chunks.
Step 2: Consider lure-speed bait if magnet feels slow
If you feel that magnet bait slows you down, swap to a bait that improves lure speed so your bites come faster while you stand at the Mineshaft pool. Faster bites mean more rolls on the loot table per minute, which naturally increases how many Iron Chunks you see over time.
Step 3: Keep fishing in the same Mineshaft spot
Iron Chunks are tied to the Mineshaft pool, so stay in that area; moving to other Chasm water may change the loot table and reduce your Iron Chunk chances. Treat this as a focused farm: pick a rod, equip your bait, and just keep casting until you hit the number you need.
Main uses of Iron Chunks
| Item / Purpose | Iron Chunk requirement |
|---|---|
| Merlin’s Staff Rod | Requires Iron Chunk as one of the core materials. |
| Tidemourner Rod | Needs 5x Iron Chunk as part of the crafting recipe. |
| Other Chasm crafts | Various Chasm-related gear and upgrades may list Iron Chunk as a common ingredient. |
| General progression | Helps you complete Merlin-related goals and unlock stronger rods tied to The Chasm content. |
You can treat Iron Chunks as a staple Chasm material, so farming a stack while you are already in the Mineshaft saves you from multiple trips later. Whenever a new Chasm rod or quest drops, there is a good chance it will ask for at least a few Iron Chunks.
If you follow this route—reach Sunstone Island, talk to Merlin for Chasm access, head down to the Mineshaft, and fish with magnet or lure-speed bait—you can stack Iron Chunks steadily without confusion. Once you are done, return to Merlin and your crafting spots to turn those Iron Chunks into powerful rods like Merlin’s Staff or Tidemourner, pushing your Fisch progression further with each trip.
