From: dlzc1@cox.net   
      
   On Thursday, May 4, 2023 at 12:43:22 PM UTC-7, Martin Brown wrote:   
   > I think it might be down to simple physics and also why many liquids    
   > with lowish vapour pressure are difficult to ignite without a wick.    
   >    
   > That candle made of sucrose sounds like an interesting test if slightly    
   > dangerous from a point of view of working with very hot concentrated    
   > sucrose solution ~120C and some ordinary candle wick to make a sugar    
   > candle by dipping.    
   >    
   > Basically a lead washer on the end of a piece of wick dipped into a tall    
   > container of hot concentrated sugar solution a la jam making. Allowed to    
   > cool and keep going until you have a candle of sucrose. My betting is it    
   > will burn with a rather dirty flame but that it will work OK.    
   >    
   > The problem otherwise is that the molten/dissolved in its own water of    
   > crystalisation sugar is a very good conductor of heat and so there is    
   > always some more sugar to dissolve/melt at the interface. The wick    
   > provides a location that is thermally isolated from the bulk liquid    
   > where it can get hot enough for ignition and then away we go.    
   >    
   > Do let us know if you manage this feat!    
      
   Not exactly the same but isn't "sugar rock candy" often found on a string a   
   suitable starting point?   
      
   David A. Smith   
      
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