Re: 4-4-0 American "project"
Ken, The reason that a direct flame causes concrete to "explode" is not the water that it contains. It's the expansion of the concrete that has no place to go but up. Arthur Mexico City
RE: 4-4-0 American "project"
Might want to look into a Squirrel Cage Fan instead of the shopvac, The Squirrel cage fans are really quite and move a pretty good volume of air. Most shop vacs are deafening. Steve > -Original Message- > From: Terry Griner [SMTP:[EMAIL PROTECTED] > Sent: Wednesday, November 05, 2003 8:10 AM > To: Multiple recipients of sslivesteam > Subject: Re: 4-4-0 American "project" > > Ken Keith and all, > I went the way Ken has planned but with a couple extras; > The first is a sand bed, to hold odd shaped pieces (and not catch fire!). > The second is two plastic tubs, one with Pickle solution and one with > Baking soda and water for cleanning and neutralizing. > All under the third, a hood with a shop vac motor venting outside. > I am now planning a paint booth insert! > Terry Griner > Columbus Ohio >
Re: 4-4-0 American "project"
Ken Keith and all, I went the way Ken has planned but with a couple extras; The first is a sand bed, to hold odd shaped pieces (and not catch fire!). The second is two plastic tubs, one with Pickle solution and one with Baking soda and water for cleanning and neutralizing. All under the third, a hood with a shop vac motor venting outside. I am now planning a paint booth insert! Terry Griner Columbus Ohio
Re: 4-4-0 American "project"
> The surface of the table is going to be made of fire bricks. Any attempt to > save $ would result in a potentially unsafe situation. Heating a surface > that contains moisture WILL result in an explosion. Concrete is in this > category and red-brick is too. Hi Ken, Glad to see this posting! I was just about to fire off an e-mail to you that a LOT of common brick, especially those that have been stored out of doors, can contain moisture, and exposing them to the intense heat required for silver brazing could be dangerous. I'd also caution you to use silver alloys that do not contain cadmium, or if you must, to do that brazing out of doors, or with very very good ventilation. Cadmium is evil stuff that you do not want to ingest! The easiest way to avoid this problem, is to use cadmium free brazing alloys. Lets keep the hobby fun.but safe! Keith Taylor Jefferson, Maine USA
RE: 4-4-0 American "project"
The table is going to be a 3' X 3' steel frame and some cross lattice to support a bed of bricks. This will allow mo to be able have a flame proof, movable surface to do brazing and welding on as needed. The surface of the table is going to be made of fire bricks. Any attempt to save $ would result in a potentially unsafe situation. Heating a surface that contains moisture WILL result in an explosion. Concrete is in this category and red-brick is too. Remember Safety First. Ken -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Arthur S. Cohen Sent: Tuesday, November 04, 2003 11:11 PM To: Multiple recipients of sslivesteam Subject: Re: 4-4-0 American "project" Ken, Don't waste your time building a special table on which you can weld/braze. An ordinary common red brick on top of anything will do and probably be better than anything you can dream up. What you have to be careful about is that the pieces being brazed, silver soldered, together are clean, there is a sufficient volume (not temperature) of heat available, and that a borax type flux is used. Another important point is that there should be some way to steady the pieces being joined so that they don't move around during the brazing process. Arthur Mexico City
Re: 4-4-0 American "project"
Ken, Don't waste your time building a special table on which you can weld/braze. An ordinary common red brick on top of anything will do and probably be better than anything you can dream up. What you have to be careful about is that the pieces being brazed, silver soldered, together are clean, there is a sufficient volume (not temperature) of heat available, and that a borax type flux is used. Another important point is that there should be some way to steady the pieces being joined so that they don't move around during the brazing process. Arthur Mexico City
