Difference between revisions of "Upgrade/RFFoil/WoodsMetal"
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What do we need to look at to decide which one we use? | What do we need to look at to decide which one we use? | ||
| − | * difference in expansion coefficient? | + | * shrinkage expansion after solidification: Clow136 skrinks 2x10-4. For a thickness of 2mm, that is less than 1 micron, so probably irrelvant. For Field's metal, we don't know. |
| + | * difference in expansion coefficient? Field's metal is close to Al. For Cerrolow we don't know. | ||
* difference in melting temperature/conductivity? (how warm could foil become while machining?) | * difference in melting temperature/conductivity? (how warm could foil become while machining?) | ||
* difference in toxity: Field's metal does not contain lead and less bismuth | * difference in toxity: Field's metal does not contain lead and less bismuth | ||
* Al affinity: how easy can we get it off? | * Al affinity: how easy can we get it off? | ||
* recoverability: stuff is rather expensive (count 5 liter for final box?). how well can we recover it? | * recoverability: stuff is rather expensive (count 5 liter for final box?). how well can we recover it? | ||