I copied this section from a second edition AD&D book. For now, it will serve as a guide, but I'm aware it doesn't fit in with some existing rules about armor, cost and repairs. If someone decides to pursue this as a money-making business, I'll have to examine it in detail first.
The Armorer knows enough Blacksmithing to forge metal armor and craft scale and chain mail (though he cannot forge horseshoes, wrought iron gates, hardened metal tools, or anyother useful items unless he also knows Blacksmithing); The Armorer knows enough Leatherworking to cut and shape boiled leather into leather armor, shield coverings, and the under-layers of scale mail and banded mail (though he cannot make dress jerkins, saddles, elaborate pouches or rucksacks, or any other useful leather items). The Armorer knows enough of the Tailor's art to manufacture padded armor and armor padding (but not enough to cut and sew any sort of good-looking garment). Naturally, the ordinary Blacksmith cannot forge metal armor, the Leatherworker is not experienced with making leather armors, and the Tailor isn't conversant with the making of padded armor, unless they also take the Armorer proficiency.
Note that this skill does not grant the ability to make or repair magical or enchantable armor items.
To craft armor, the character must first have a workshop (a place to work and tools with which to do work).
Metal Armor
If he intends to make any sort of all-metal armor (chain mail, field mail, full plate, plate mail, and helmets), the workshop is a smithy, complete with tools, bellows, a furnace, an anvil, tongs, cauldrons, casting molds, and all the other materials necessary to process unrefined metal into armor. Such a workshop costs 200 gp, plus the cost of the shelter where it is set up: An additional 100 gp for a pavilion tent, an additional 300 gp for a well-crafted hut/workshop, or more as part of a larger dwelling, such as a mansion, villa or castle (these sorts of dwellings are priced at whatever sort of price scheme the DM prefers).
(Included in the price of the smithy is the cost of the tools necessary to make leather hilt-wrappings, padded armor, armor linings and padding, and the simple leather straps used to
hold all-metal armors together.)
This workshop is large enough to accommodate the character and up to two apprentices working full-time. (The apprentices, too, must have the Armorer proficiency; the character can always take in an apprentice without the proficiency and train him, but until he acquires the Armorer proficiency he doesn't count as a productive element of the workshop.)
In theory, the character could hire another three-man crew to work a second shift in the same workshop; thus the workshop would be occupied nearly 24 hours a day.
(This presumes eight- to ten-hour shifts and a certain amount of necessary nonproductive time each day: Time for furnaces to cool and be cleaned, tools to be repaired and sharpened, etc.)
No more than three people can work in this workshop effectively; with more than three people, the workshop suffers a loss of efficiency so that it produces goods just as though it were only manned by three armorers.
To expand the workshop costs an additional 50% for each +three workers. If the smithy costs 200 gp and is set up in a 300-gp hut, thus costing 500 gp, the builder could pay +250 gp.
Then, the workshop would accommodate three more armorers at the same time. For another +250 gp, now totalling 1,000 gp, the shop can accommodate nine armorers at the same time.
Leather Armor
If he intends to make any sort of all-leather armor (hide armor, leather armor, and armored leather caps), the workshop is a leatherworker's shop, including apparatus for leather soaking, scraping, tanning, boiling, boiling in wax, shaping, holepunching, sewing, and all the other processes by which leather is transformed into armor.
Such a workshop costs 25 gp, plus the cost of the shelter where it is set up: An additional 25 gp for a large tent, an additional 75 gp for a well-crafted hut/workshop, or more as part of a larger dwelling (at whatever price scheme the DM prefers). (Included in the price of the leatherworker's shop is the cost of the tools necessary to make padded armor and armor linings and padding.) As with the smithy above, this price presumes one principal leatherworker and up to two apprentices may work together at the same time. Above that number costs 50% of the workshop and housing costs per additional three leatherworkers.
Metal and Leather Armor
If he intends to make both sorts of armor, or armor which combines both metal and leather elements (banded mail, brigandine, bronze plate mail, ring mail, scale mail, shields, splint mail, and studded leather), a combined workshop is needed. Such a workshop costs 250 gp, plus the cost of the shelter where it is set up: An additional 100 gp for a pavilion tent, an additional 300 gp for a well-crafted hut/workshop, or more as part of a larger dwelling (again, at whatever pricing the DM prefers). (Included in the cost of the armorer's shop is the cost of the tools necessary to make wooden shield blanks and shield frames, padded armor, and all armor linings and padding necessary to the armored goods.) As with the smithy above, this price presumes one principal armorer and up to two apprentices; above that number costs +50% of the workshop and housing costs per additional three armorers.
Apprentices and Overseers
The cost of the workshop constitutes only the set-up cost for the armouring operation. Maintenance of the workshop, pay for the employees, and cost of materials also come into play. Of course, so do the profits from the sale of manufactured goods. Each apprentice costs 2gp/week for food, upkeep, and training. And once an apprentices has reached young adulthood (age 16) and has achieved an Armorer ability check of 12 or better, he'll demand to be promoted to Overseer status (described immediately below) or will find better pickings elsewhere.
Apprentices cannot run a workshop unsupervised. Supervision comes in the form of an Overseer, an adult with an Armorer ability check of 12 or better. Each Overseer costs 15 gp/week (the DM may wish to have the cost relate to the Overseer's Armorer ability check: 15 gp/week at a check of 12, +15 gp/week per +1 to his ability check; thus, if his ability check is 16, he costs 75 gp/week).
Time to Craft Armor
To determine the time it takes to make a piece of armor, take the armor's AC. The number that the AC is under 10, multiplied by two weeks, is the time it takes an apprentice (supervised and aided by an Overseer) to craft the item.Thus, a set of chain mail (AC 5) is calculated this way: 10 – 5 = 5; 5 x two weeks = ten weeks. It takes 10 weeks to make a suit of chain mail.
Standard Costs to Manufacture Armor
Armor Retail Materials Time Apprentice & Total
Piece Value Cost (gp) Taken Overseer Cost
Banded Mail 200 100 12 wk 48 * 148
Brigandine 120 60 8 wk 32 * 92
Bronze plate 400 200 12 wk 114 ** 314
Chain mail 75 38 10 wk 20 *** 58
Field Plate 2000 1000 16 wk 304 + 1304
Full plate 7000 3500 18 wk 342 + 3842
Helm/great 30 15 4 wk 8 *** 23
Helm/basinet 8 4 1 wk 2 *** 6
Hide armor 15 7 8 wk 8 ++ 15
Leather armor 5 1 +++ 4 wk 4 ++ 5
Padded armor 4 0+++ 4 wk 4 ++ 4
Plate mail 600 300 14 wk 133 ** 433
Ring mail 100 50 6 wk 24 * 74
Scale mail 120 60 8 wk 32 * 92
Shield/body 10 5 2 wk 4 *** 9
Shield/buckler 1 0+++ 2 wk 1 ++ 1
Shield/medium 7 3 2 wk 4 *** 7
Shield/small 3 1 2 wk 2 *** 3
Splint mail 80 40 12 wk 24 *** 64
Studded lthr 20 10 6 wk 6 ++ 16
Barding:
Chain 500 250 10 wk 190 + 440
Full plate 2000 1000 16 wk 304 + 1304
Full scale 1000 500 8 wk 152 + 652
Half brig. 500 250 6 wk 114 + 364
Half padded 100 50 2 wk 38 + 88
Half scale 500 250 8 wk 152 + 402
Lthr/Padded 150 75 4 wk 75 + 150
* Two apprentices, no overseer
** One apprentice, ½ overseer
*** One apprentice, no overseer
+ Two apprentices, one overseer
++ ½ apprentice, no overseer
+++ Cost reduced because of easy availability of materials; cost of "0 gp" means cost is a negligible
For pieces of armor which don't grant specific AC benefits (like helmets), figure the time at 1 week per 7.5 gp value. Thus, a great helm would take four weeks to make (it costs 30 gp); a basinet, one week and a few hours of the eighth day (it costs 8 gp).
Cost to Craft Armor
And it does cost money to craft armor. The cost is:
(a) About half the "retail value" of the armor piece for materials; plus
(b) The cost of maintaining one or two apprentices during the time it takes to make the piece; plus
(c) Additional cost based on how much of the overseer's time and attention the project takes. (The project may take one or two overseers full-time on the project, may take only half one overseer's time on the project, or may take none of the overseer's time—the latter constitute projects that the apprentices can do all by themselves, mostly unsupervised.) The previous table shows standard costs to manufacture armor. In usual circumstances, the difference between the Total Cost and the Retail Value is the shop's profit when it sells a piece of armor.
As you can see from the table, hide armor, leather armor, padded armor, medium shields and small shields are little-to-no-profit propositions. However, they keep the apprentices paid and keep work in the shop.
Chance of Failure
It would seem that the thing to do would be to set up an armorer's shop and just build field plate and full plate, which are the most profitable items of armor. However, that isn't necessarily so.This is because, for every item of armor you make, you have to make an Armorer Ability Check. At the end of the armor-making period, the most experienced (highest ability check) character who worked continuously on the project makes his Armorer ability check. If he passes the check, the armor is just fine. If he fails it, it's flawed. If the character missed his roll by 1, 2, 3, or 4, the armor looks just fine. The maker knows it's flawed, but this will not be obvious to anyone on casual inspection, and only another armorer will be able to detect that it's flawed . . . and only with careful inspection. This type of flawed
armor functions at 1 AC higher than it should (thus flawed full plate would be AC 2 instead of 1). If the flawed armor is ever struck in real combat with a natural to-hit roll of 19 or 20, it "breaks" (caves in, splits open, etc.). Its AC goes up 4 (thus our flawed full plate would shoot from AC 2 to AC 6). And because it's broken and hanging wrong, it hinders the player; until he can take it off (this takes 1d4 rounds), he moves at half his normal rate and suffers a –4 penalty to all of his attack rolls. Obviously, most reputable armorers would never sell a piece of flawed armor. They have their reputations to protect, so they throw it away. They take a loss in money equal to the Total Cost of the armor from the chart above. If the character misses his roll by 5 or more, it's obvious to anyone, with casual inspection,
that the armor is flawed. No one will buy it at the normal retail value. The armorer might able to sell it at half the Total Cost value to someone desperate for cheap armor, someone who's willing to take the risk of wearing flawed armor. If he can't sell it, this too is a total loss. Finally, not all armor is the same in the level of difficulty it requires to manufacture. Some armor is simple enough that apprentices can work on it alone. Some is so complicated that only master armorers should oversee this work. And hiring a master armorer costs more than just hiring a normal overseer. The chart below shows the
relative difficulty of manufacturing these different types of armor.
Armor Type Modifier to Armorer Proficiency Check
Banded Mail +1
Brigandine +1
Bronze plate 0
Chain mail +3
Field Plate –3
Full plate –3
Helm/great +3
Helm/basinet +3
Hide armor +3
Leather armor +3
Padded armor +3
Plate mail 0
Ring mail +1
Scale mail +1
Shield/body +3
Shield/buckler +3
Shield/medium +3
Shield/small +3
Splint mail +3
Studded leather +3
Barding
Chain 0
Full plate –3
Full scale 0
Half brig. 0
Half padded 0
Half scale 0
Lthr/Padded 0
As you can see, making field plate and full plate is a risky proposition. Only the best of independent armorers will undertake such a task because the potential losses are so great. (On the other hand, a hireling armorer will do it whenever his employer says, because all the financial risk is his employer's.) And player-character armorers run these same financial risks when they try to make field plate and full plate for themselves or their friends.
Added Expenses
If the DM wishes, he can add to the grief of a player-character armorer by confronting him with a lot of the hidden expenses of any such operation:
Bribery: In many places, local officials will expect a little graft in order for them to process the necessary permits efficiently and regularly. If the PC doesn't pay up, those permits take a long, long time (months) to be processed, and during that time the PC can't operate a retail armorer's shop.
Theft:
Armorer's shops can be burglarized just like any other operation. Thieves are quite willing to steal some high-quality armor goods and fence them elsewhere in the city. Depending on the quality of the merchandise lying around in the shop, this can be a seriousfinancial blow for the shop.
Unclaimed Goods:
Sometimes a patron who custom-orders a piece of armor never shows up to buy it. Maybe he's been killed in the meantime; maybe he ran low on funds and decided not even to tell the armorer of his misfortune. And if the custom piece of armor was decorated or fine-tuned to that specific customer (for example, if it bears his coat of arms or unusual decoration), it could be that no one else is willing to buy it . . . except at heavily discounted prices.
Unsold Stock:
Armorers don't just work up pieces of armor to order. The armorer fabricates numerous examples of the most common sorts of armor (leather and padded armor, shields) for the casual customer and as practice for the apprentices. Not all of this gets sold, and a piece that is never sold is a few gold pieces out of the shop's coffers. All in all, it may be safer, financially, for a player-character to be a full-time adventurer and only a part-time armorer.
Player-Character Workshops
Often, a PC Armorer who is also an adventurer will set up an armorer's shop and crew it with a single overseer and two apprentices. This shop's duty will be to keep the PC supplied in armor; also, whenever the PC returns home, he can, if he wishes, operate the shop, especially in the "off-shift" (whichever shift the regular crew is not operating it). If he does hire an overseer, he'll have to pay the rates according to the overseer's ability, as described above. Note that a PC Armorer can make armor for his friends. He can't avoid paying the minimum cost for the materials, of course. The character can carry a tent and leatherworker's shop on the back of a horse, so he can work on any sort of all-leather or padding armor while on the road. But on the road, he can only get in a couple of hours' work per day, so multiply all
armor-making times by four to determine how long they take. The character who does all this extra work will be a little more tired than his fellows; reduce his Intelligence ability check to spot upcoming dangers.
Repairing Armor
You can also use the Armorer proficiency to repair damaged armor. It costs the armorer 1/100th the armor's retail value for each Damage Point that he repairs. Again, that's the cost to the armorer, which assumes that apprentices are doing the work, and unsupervised; apprentices can perform all armor-repair functions. The cost to the armorer, compared to the apprentice's wage, shows you how long it takes to repair (2 gp/week for one apprentice, remember). Example: A set of chain mail has taken 10 points of damage in combat. The owner brings it in to be repaired. Retail value of chain mail is 75 gp, so the cost to repair each point of damage will be .75 gp, or 75 cp. The armorer repairs the 10 points of damage, which costs him 750 cp (75 sp). This is less than 1 gp, so the apprentice doing the repairs takes about two days to fix the chain maul hauberk. Armorers typically charge a 50% profit on repair jobs. In the example above, the armorer's cost was 75 sp; therefore, he'd charge the customer about 115 sp for the repair job.