jeLLOw pAgeS,工具。

Monday, August 15, 2011

SanDIY casting, attempt 2。


I have learnt that Delft clay is a substance that is like a sand mixes with oil, so I mixed the silica sand with oil this time - without the clay powder.

沙/砂模鑄造第二試。Delft clay是金工沙/砂模鑄造使用的一 種……油性「土」,是一種類似沙/砂與油混合的物質。於是這次我用油取代水,開模。


I made a proportion of 10:2, silica sand and oil for the fist try, and the mixture was too greasy and it slipped down from the aluminium ring. Oops.

第一次我沒有加黏土粉,而是把黏土粉的比例給了油,因為它是「沙/砂+油」的組合(偏執),所以矽砂:油是10:2。結果就是沙/砂模整個從模型裡滑下來。NG。


第二次以之前的比例(矽砂:黏土粉:油=10:1:1)加入黏土粉混合。沙/砂模沒有從上模型裡滑落,倒是與下模型裡的沙/砂黏住。

看來,黏土粉與油的合作關係,並沒有與水那樣好。

待續。

I then went back to the formula with silica sand, clay powder, and oil, which in a proportion of 10:1:1. As shown in the photo, I presume that oil may not be a good friend as water to clay powder.

To be continued.


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