You will need:
20 pounds of Ammonium Nitrate Fertilizer
20 ounces of Motor Oil
Mortar and Pestle
Bucket and Disposable mixing stick/spoon
4x 2" by 6" Steel Pipes
8x 2" Steel Pipe Caps
Blasting Cap
Gas Mask (Wear at all times just in case)
Gloves (Wear at all times)
Drill
Funnel
Glass bottles (Or large chunks of misc metal) (Shrapnel is optional but recommended)

Step 1: Break the bottles outside and make sure to safely collect all the glass and set it aside for later, if you're using the chunks of metal or not using shrapnel, skip this step

Step 2: Use the mortar and pestle to crush the Ammonium pellets into a fine powder, (the fertilizer MUST be at least 32% nitrogen otherwise the bomb won't perform as well as it can. (The powder will go bad if left out in open air for too long, move on to the next step as soon as the powder is ready.

Step 4: Mix the Oil and Powder at a 1:16 ratio in the bucket (1 being oil, 16 being powder) make enough to fill to about 3/4 of the six-inch pipe

Step 5: Carefully funnel the mixture (and your choice of shrapnel) into the pipe (make sure the end you're pouring it in has a cap at the bottom) after that, make sure to drill the other cap to thread the blasting cap fuse through the hole (make sure the hole is airtight so the gas expands and creates a maximum force shockwave).

Step 5: Repeat until all ingredients are spent, tighten all caps or seal them with silicone

Notes:
-Never breathe in the fumes or dust made as a product of the crushed fertilizer
-Do not tamp the mixture into the pipe
-Recipe makes 4 pipe bombs
-Can be used with Arduino to trigger blasting cap remotely
-If you're using shrapnel, you might want to use less mixture to fit the shrapnel snugger
-Make sure the fuse is long or short enough to your liking, it must be long enough for you to get away, but short enough so that they don't


How to use:
When wanting to use the pipe bomb, light the fuse and throw, if you are not confident in your throwing ability, lengthen the fuse or practise with an object of similar weight to see how far you can throw it, the bomb is unsurprisingly heavy so don't just wing it. If you're using the remote detonation method, just throw it and get far away enough to safely detonate it, alternatively, you can "plant" the bomb for detonation use in the future, this is useful for when you know your target will take a certain path.

Stacking bombs:
If you're dissatisfied with the power of the pipe bomb as a single bomb, you can stack them, this is self-explanatory, use anything that won't completely hinder or destroy the bomb to stick them together, use common sense, After putting them together with tape, silicone, glue, ETC. You can merge the fuses together to light them in unison. Another important note with stacking is that it unsurprisingly, it makes the bomb 4 times as heavy, it's unlikely you'll be able to throw it a meaningful distance after igniting the fuse. It's recommended to use the remote detonation method to not blow your fingers off, or get a bit of metal lodged in the back of your skull whilst running away.