36515Re: Best grog for refractory?
- Sep 3, 20061a. Re: Best grog for refractory?
Posted by: "grantfair2001" grant.fair@... grantfair2001
Date: Sat Sep 2, 2006 5:11 pm (PDT)
Thanks for all the replies. I gather everyone thinks the best grog is
no grog? <g>
The suggestions that I just buy some refractory are tempting. Howver
there is no local (Toronto) over-the-counter source of refractory, so
we are talking about substantial transportation costs, so the
refractory could cost up to $200 Can. Importing refractory from the
states is even more costly. UPS charges for clearing customs can
double the price of an item. I was just looking at some Sparlite25
refractory on Ebay; the starting bid price was $29.00. The UPS
standard cost to Canada for 70 pounds was about $50. That's before the
customs clearing costs, as well as the taxes collected at the border.
And 70 pounds only fills one cubic foot. I need two.
[Searching for "castable refractory" and "Ontario" I came up with this
Glasrock Products 268-274 South Service Rd
Stoney Creek, ON , L8E 2N9
I already have have 50 pounds of Kaolin, 50 pounds of white ball clay,
and 50 pounds of Kyanite, plus a big pail of sawdust from Home Depot
and a bag of much courser sawdust from a lumber mill up north. Total
cost about $50.
[Figure your cost to mix up and install this stuff, then add the cost of
chipping it out and throwing it away...]
If you search on "sawdust" in this conference you will find that
Carlos made refractory from a similar recipe (except his grog was
crushed insulating firebrick) and he found it left his furnace surface
relatively low temperarature. The only drawback was shrinkage.
[The crushed soft firebrick would make this mix lighter and less liable to
shrink. Regular grog would not work as well.]
I'm not suggesting the advice offered is wrong for others, just not
where I am headed for the reasons outlined. If I screw up I will be
the first to say you told me so <g>.
[Do let us know...]
- << Previous post in topic Next post in topic >>