Your tip's gone round and dull. Heat isn't transferring properly, you're getting blobs instead of clean fillets on through-hole joints. The 5.0mm chisel profile on this TS1584 cartridge gives you a flat, wide contact face that sits flush against larger pads and terminal blocks. Drop it in, let it heat up, and the joint flows even. Part number K80CH050 if you're cross-referencing your iron's tip list
| brand | Jaycar |
| tip_type | Chisel |
| tip_diameter_mm | 5 |
| series | TS1584 |
| part_number | K80CH050 |
| category | Electronics & Components > Tools & Soldering |
| rrp_aud | 34.02 |
| pack_size | 1 |