I don't know how to fix it.
Due to the fact that we have two-sided recipes for basic resources (boards / gears), it does not allow you to craft even the simplest fast belt (edited) - you do not have enough coins.

It's strange that I have not seen the same bug in other mods.

However, we can handcraft parts of the normal recipe separately, and then assemble the final one.
Apparently there is some problem with finding the best recipes in the manual crafting for the available resources.

-del

ok, it can be fixed with
allow_as_intermediate = false,
for your recipes (ResourceToCoin & CoinToResource functions)

hello saaadel can help me where i can put allow_as_intermediate = false in 2 methods in recipe.lua file (i not lua devoloper) and thanks :)

lib/recipe.lua
---CUT--- #1
local function ResourceToCoin(exchange)
return {
type = "recipe",
name = exchange.resource .. "-for-coin",
allow_as_intermediate = false, -- THIS LINE <<<<<<<<<<<<<<<<<<<<<
order = GetItemOrder(exchange),
---CUT---#1

---CUT---#2
local function CoinToResource(exchange)
return {
type = "recipe",
name = "coin-for-" .. exchange.resource,
allow_as_intermediate = false, -- THIS LINE <<<<<<<<<<<<<<<<<<<<<
order = GetItemOrder(exchange),
---CUT---#2

thanks very much for help :)

patch for "git patch" terminal command: https://pastebin.com/DRcE1YyD

but now if you dont have coins will not use it for craft XD

No, that's a different idea:
Handcrafting only works for common materials/ores, and in case you want to spend coins, the ingredients have to be made separately — explicit recipes (coins => ingredient/product).

So, if you select a some product for handcrafting, it will use common materials only.
a
EDIT: yep, it's not the best solution. But for me, it's convenient. At least it fixed common way via standard/common materials

ok i understand what you try to do now thanks :)

it look like mod bug with item in other mod (i remmember before mod work normal untill open more researches happen)

i will try with
ResourceToCoin
allow_as_intermediate = false,

CoinToResource
allow_as_intermediate = true, (i dont think i need make it false (maybe bug from ResourceToCoin i dont know i only test XD))

you know how i can make it like black market 2 have all items you research automatic ? (i know this not one line of code XD i mean is there thing in api get all researched recipes in game ?)

Fixed handcrafting for the new release! Thanks for the help & feedbacks