WELCOME TO THE WORKBENCH LP TORCH HEAD PAGE AT NHSOUTH !
| 1. | barbed hose adapter for LP hose, use teflon tape to seal the threads |
| 2. | 3/8 inch I.D. galvanized pipe nipple 6 inches long galvanized pipe rusts less, and my torch has undergone almost no zinc burnoff |
| 3. | 3/4 inch I.D. galvanized pipe nipple 3 inches long |
| 4. | eight 8-32 round head machine screws screwed into tapped holes in the 3/4 inch pipe nipple, used to align the LP gas orifice with the burner head, good alignment makes a huge difference here |
| 5. | an 025 MIG welding tip used as an LP gas orifice. MIG tips are very inexpensive, usually under a dollar. They have a standard size outside bolt thread. To attach the tip, tap one end of the 3/8 inch pipe nipple (item number 2) and screw a 3/8 inch steel bolt into the tapped end, using teflon tape to seal the threads. Hacksaw the bolt off at the end of the pipe nipple. Drill and tap a hole in the bolt plug that fits the MIG tip threads. Then screw in the MIG tip, using teflon tape to seal the threads. |
| 6. | six 5/16 inch dia holes drilled in pipe adapter to act as air intakes for the mixing chamber, the adapter acts as a mixing chamber for LP gas and air |
| 7. | 3/4 inch I.D. -to- 1 inch I.D. galvanized pipe adapter |
| 8. | any nonflammable barrier you can devise to support the short inner pipe, I used a 9/16 SAE hex nut and some sodium slicate-based stove pipe cement |
| 9. |
1 inch I.D. galvanized pipe nipple 3 inches long |
| 10. | 3/8 inch I.D. galvanized pipe nipple 2 inches long - this pipe nipple is aligned with the gas orifice |
|
A good high pressure regulator is good safety protection when using LP torches. I used a hose clamp on the ends of 3 feet of rubber LP gas hose to secure the hose on barbed adapters. I purchased a high pressure LP regulator, and connected the regulator inline between the tank and the hose. I have relied on the sound of escaping LP gas, rather than the pressure guage on the regulator, to know when to scratch a spark at the end of the torch. I have found that my torch stays cool enough to hold with my bare hand, unlike the large commercial LP torches I have tried. Also, I have found this torch large enough to use in a number 4 crucible furnace, without a blower, and the torch is plenty big enough to handle lead, pewter, and zinc melts in small and lined cast iron spoons, ladles, and pots. If you are interested in lining melt pots or in building crucible furnaces for a home foundry, you can find very low cost refractory recipes in my casting book. If you are interested in melting pewter or zinc, to cast in your own silicone molds, see the vulcanizer and spincaster information here at the workbench. |
[ NHsouth ] [ CraftCorner ] [ Workbench ]
workbench disclaimer
Send questions or comments about this web site to webmanager@nhsouth.com
Copyright © 1999, 2000 Gynan Enterprises All rights reserved.
Gynan Enterprises acceptable use policy