HIL System · Knowledge Base

Library Hub

Six bodies of knowledge. Every household principle you need to own better, maintain smarter, and stop losing things to time.

"A household runs on principles, not products." — Ellen Swallow Richards, 1882
First woman admitted to MIT. Founded the field of home economics as an applied science.
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LIBRARY 01 — APPLIED CHEMISTRY
HIL Clean
Ten raw ingredients replace forty branded products. The science behind why they work — not the marketing. Free forever.
10 ingredients
40+ products replaced
SKU reduction
SurfactantsDisinfectionAbrasivesSolventsDIY formulas
Open Library →LIVE
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LIBRARY 02 — KIT SYSTEM
HIL Organize
Know what you own. Know what you can do. 28 standard kits, three skill tiers, and a free AI Capability Analyzer prompt.
28 standard kits
3 skill tiers
TK / SK / MK / CK / FC
RepairCleaningMaintenanceGardenSafety
Capability Prompt — paste into any AI
You are the HIL System Capability Analyzer — a friendly, knowledgeable old-school handyman. Interview me about my home inventory. Ask ONE question at a time starting with: where do you keep your tools right now? Map my answers to HIL Standard Kits, then tell me: what I can do right now, what one addition unlocks the most new capability, and group results into: Tasks I can do alone / Tasks I can do with one cheap addition / Tasks I should hire out. End with a Kit Card showing my active kit IDs.
Open HIL Organize →
LIVE
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LIBRARY 03 — PRESERVATION
HIL Restore
Stop replacing. Start restoring. Five base ingredients cover most jobs. Includes the pre-1970 tool quality guide and honest restore-vs-replace math.
5 base ingredients
6 techniques
Pre-1970 tool guide
Surface rustTool handlesCast ironLeatherWood
The 5 Base Ingredients
  • ✓ Beeswax — wood, cast iron, leather waterproofing
  • ✓ Mineral oil — cutting boards, food-safe finishes
  • ✓ Linseed / Tung oil — tool handles, outdoor wood
  • ✓ White vinegar — light rust, mineral deposits
  • ✓ Baking soda — mild abrasive, odor, surface prep
  • ✓ Bar Keepers Friend — stainless, cast iron, porcelain
Open HIL Restore →
LIVE
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LIBRARY 04 — INTENTIONAL OWNERSHIP
HIL Supply
Own less. Own better. Where to find quality tools cheap, the pre-1970 quality guide, and a decision matrix for when to DIY vs hire.
6-tier acquisition guide
$100 full homeowner kit
DIY vs Hire matrix
Estate salesPre-1970 steelHarbor Freight vs Snap-OnWhen to hire
DIY vs Hire — Quick Reference
  • ✓ DIY Picture hanging, painting, drain clearing, caulking, gutter cleaning
  • ~ Maybe Toilet repair, tile, fence, appliances, basic plumbing
  • ✕ Hire Electrical panel, gas lines, foundation, roof replacement, permits
Open HIL Supply →
LIVE
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LIBRARY 05 — CAPABILITY
HIL Build COMING SOON
Tell the system what kits you have. It tells you what you can build, fix, and do — and what one addition unlocks the most new capability.
Powered by HIL Organize kits
AI capability analysis
Kit gap finderUnlock treeProject planning
IN DEVELOPMENTSOON
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LIBRARY 06 — SCHEDULED CARE
HIL Maintain COMING SOON
Know what your home needs, when it needs it, and what skipping costs. Seasonal maintenance schedules tied to your actual HIL addresses.
Tied to HIL addresses
Seasonal schedules
Skip-cost calculator
HVAC filtersRoof inspectionSump pumpWeatherization
IN DEVELOPMENTSOON
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