Clean and bake, step 5 of 8
How clean is clean enough, and how do I prove it?
Each cleanliness specification carries its own unit. This step reads the cleanliness class, the particle count and the bake that the target pressure demands.
read read from the base typed entered by hand, outside the base
The machine you laid, walls in their state
Back to the builderReading the machine you laid.
What already answers this
Each line links a page of this site and says what it carries for this step.
- /essays/clean-has-no-unit/ reads thirty specifications and shows the trades each set their own quantity
- /academy/why-we-bake/ gives the mechanism a bake works on, and the temperature it needs
- /tools/outgassing/ serves the rate a bake actually buys, with the bake it was measured after
What are you going to do to it, and what did the base measure
The state of the walls, unbaked or baked or vacuum fired, belongs to the machine and is set at step four. What you set on this step is what you intend: the bake you plan to run, and the cleanliness you are going to require. Both are typed, and the dossier carries them next to the outgassing rates.
| Material and state | Rate the base serves | Bake it was measured after | Against your bake |
|---|
Not in the base yet
What this step cannot answer, and why. Every count below is read from the corpus at each build.
- unsourced No cleanliness class is stored per material or per machine. The essay reads thirty specifications and shows that each trade specifies its own quantity. The ISO 14644-10 surface grade that could bridge them does not appear in vacuum practice. Nothing here converts one class into another.
- unsourced No particle count data is carried. A cleanliness class can be recorded in a Bill of Vacuum as a stated requirement, and it will be marked unsourced until a document backs it.
Your machines
kept in this browser, never sent anywhereNothing here yet. Open an archetype, change one thing, and save it here.