They can be assembled in OSRS GP the Blast Furnace. However, you will have to complete The Tourist Trap quest beforehand. NPC Ordan will be there to offer to you Iron Ore so you won't have to worry about mining it yourself. This Ore will be melted at the Furnace that will transform it into the bars used to create Iron Darts at the Anvil. Although it could seem like an ideal approach to make bows, you must switch to bow making process later for more experience.
The Managing Miscellania minigame is the primary source of wood income. Through it, you'll be able get huge amounts of Maple Logs. They can be transformed to Unstrung Maple Longbows and later after being destroyed using High Alchemy. This method will cause minimal losses, but , in the end, you will receive large amounts of Fletching knowledge and a good one in Magic too.
If you're able to buy Broader Fletching perk purchased from Slayer Master, you can use it to make Broad Arrows. They're also made of those Maple Logs, so if you have learned how to make use of Managing Miscellania to your advantage it should be no problems obtaining enough timber for this kind of process.
Broad Arrowhead packs are offered by the Slayer Master, so you don't need to create these on your own. you just need to attach them to the Arrowheads on the shafts of Arrows and you should be good to start. By using this method it is easy to level to levels 99. If you require Bowstrings to whatever reason, you can get it from Temple Trekking minigame.
Being Ironman can be a OSRS gold challenge for many aspects, and certain skills take a significant amount of effort and difficult to master. Herblore is probably the most confusing among them all. Even with the most basic accounts it's not easy to train this ability as most players purchase herbal products from Grand Exchange and make potions using them to develop the ability.