Lye calculator
Pick oils, type the oil weight, read the charge. Everything below recomputes as you type — no submit button, no server round trip.
All entries
12 published of 30 entries written, released on a schedule
Formulas
Complete recipes with the oil bill, the lye charge and the cure window spelled out.
7 entries
Formula · Butter-ledShea and Cocoa Luxury BarThirty-five percent butter by weight, eight percent superfat, and a lather that feels like hand cream. It is…EasyCure 8 weeksINS 1512026-09-13
Formula · With additivesGoat Milk, Honey and Oatmeal BarMilk soap, done cold: the milk is frozen into a block so the lye cannot scorch it, and the loaf goes into th…IntermediateCure 6 weeksINS 1522026-09-09
Formula · Olive-ledCastile, All Sixteen Weeks of ItOne oil, one wait. Pure olive soap is the slowest recipe in this library and the cheapest to make, and the f…StarterCure 16 weeksINS 1052026-09-05
Formula · Animal fatTallow Heritage BarForty-five percent rendered beef tallow with a little beeswax, which is roughly what a household soap would …IntermediateCure 6 weeksINS 1612026-09-02
Formula · Coconut-ledCoconut Laundry Bar, Zero SuperfatThe one bar in this library that is not for skin. Coconut oil alone, no superfat at all, cured three weeks a…EasyCure 3 weeksINS 2582026-08-27
Formula · Coconut-ledPalm-Free Vegan Everyday BarPalm oil is the easiest way to put stearic and palmitic acid into a bar, and it is not the only way. Shea bu…StarterCure 6 weeksINS 1422026-08-22
Formula · Olive-ledThree-Oil Starter BarA 1 kg beginner batch built from olive, coconut, palm and a splash of castor. Light trace, one colour, no sw…StarterCure 4 weeksINS 1532026-08-17
Techniques
One pouring, layering or reworking method per entry, with the trace stage it needs.
5 entries
Technique · LayeringPencil Line Separator LayerA two-millimetre line of charcoal batter between bands, drawn along the rim of the mould rather than by hand…IntermediateCure 5 weeksINS 1442026-09-21
Technique · SwirlHanger SwirlA bent wire pushed down through the batter and pulled up again, once lengthwise and once across. The most re…IntermediateCure 5 weeksINS 1532026-09-18
Technique · Salt soapCold Process Salt BarFifty percent salt by oil weight in a 70 % coconut bill with a 15 % superfat. It has a forty-five minute cut…IntermediateCure 8 weeksINS 2122026-08-30
Technique · SwirlDrop Swirl in the MouldThe first swirl worth learning. Contrast batter is dropped from a height so it punches down through the base…StarterCure 5 weeksINS 1532026-08-25
Technique · LayeringStraight-Line Layer PourThe one technique that decides whether the rest of your soap looks deliberate: three bands, poured at the ri…StarterCure 5 weeksINS 1442026-08-20