before that, on your cut tree off, hand axe use same time with chainsaw.
tools.json:
Find ID: “chainsaw_on” and “elec_chainsaw_on”
“qualities”: [[“AXE”, 2]], Change to [[“AXE”, 3]]
then, on construction.json, add this
{
"type" : "construction",
"description" : "Chop Down Tree",
"category" : "FARM_WOOD",
"difficulty" : 0,
"time" : 8,
"qualities": [ [ { "id": "AXE", "level": 3 } ] ],
"pre_flags" : "TREE",
"post_terrain" : "t_dirt",
"post_special" : "done_tree"
},{
"type" : "construction",
"description" : "Chop Tree Trunk Into Logs",
"category" : "FARM_WOOD",
"difficulty" : 0,
"time" : 10,
"qualities": [ [ { "id": "AXE", "level": 3 } ] ],
"pre_terrain" : "t_trunk",
"post_terrain" : "t_dirt",
"post_special" : "done_trunk_log"
},{
"type" : "construction",
"description" : "Chop Tree Trunk Into Planks",
"category" : "FARM_WOOD",
"difficulty" : 0,
"time" : 20,
"qualities": [ [ { "id": "AXE", "level": 3 } ] ],
"pre_terrain" : "t_trunk",
"post_terrain" : "t_dirt",
"post_special" : "done_trunk_plank"
},
done.
I have not used chainsaw cut terr in real life, 3 minute just be my guess.