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| NormanV:
Builders sand and gravel can contain salt as well. I once used builders gravel in a fish tank and all the fish died. I washed the gravel and tried again and the second lot of fish survived. |
| NormanV:
Tom, I'm not sure that I understand what you mean by a sliding gear. I already had the gearbox and the motor. |
| Manxmodder:
--- Quote from: awemawson on March 20, 2014, 12:42:31 PM ---After all the Chinese usually leave sand inside their castings so it MUST be good :ddb: Seriously though beware of the salt content of beach sand or your aluminium will go all furry. --- End quote --- You ain't kidding there. The worm & wheel gearbox on my Axminster bandsaw was full of grit and sand and the oil felt like abrasive paste. Now fitted with new bearings and gearbox internally coated with epoxy to seal all loose grit into the surface....OZ. |
| Manxmodder:
--- Quote from: NormanV on March 20, 2014, 02:07:03 PM --- Builders sand and gravel can contain salt as well. I once used builders gravel in a fish tank and all the fish died. I washed the gravel and tried again and the second lot of fish survived. --- End quote --- Norm,an easy and cheap route to a concrete mix for filling castings is to buy a bag or 2 of ready mixed postcrete from one of the DIY outlets. This is a dry mix for installing fence posts with cement and aggregate in correct proportions,all you have to do is mix with some water and fill your casting. Go easy on the water content as too much weakens the concrete and takes longer to dry....OZ. |
| tom osselton:
Lol sorry that should have gone in "surface grinder thingy" :doh: |
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