Glydust

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Crude glycerol can be mixed with sawdust, and packed into card formers (eg. sections of card tube from carpet fitters, right through to 'tetra pack' cartons).

In an effort to reduce both production labor, and residual ash, the card former has been omitted in the following method.

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Getting the mix right

Its important to get the ratio of glycerol to sawdust correct. It is in this area that a large number of first-time 'glog' makers run into trouble, and the lack of former in no way makes this less critical.

The author has made the following observations -

Mix is lacking in glycerol, or has no glycerol (ie sawdust)

Whilst sawdust can, in the authors experience, be burnt, it burns quickly, and the heat output is not impressive

(photo of sawdust for reference)

Mix is correct

Mixture burns fiercely, with limited residual ash. It is easy to light, and burns with limited smoke.

(photo of mix)

A mix of this nature will look like damp sawdust. No glycerol will be directly visible. There will be no lumps, and the mixture will be as free-flowing as damp sawdust would be. A handful tossed into the air will break up instantly. It will not clump, nor stick. Shoveling such a mixture will result in a clean looking shovel (some film / dust residue, but no more).

(photo of skuttle after use)

Mix is too heavy in glycerol and / or has lumps of solid glycerol within it

This, in the authors opinion, is the worst case scenario. A mix that is overly heavy in glycerol will exibit the following -

• Difficult to light.
• Difficult to get a sustained burn.
• Smokey burn.
• Leaks glycerol into ash pan (which is a pain to then clean out!)

Below is a photo of a mix that is overly heavy, and needs more sawdust added -

(photo of unfinished mixture)

Using (burning) the fuel

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