Lyman Mag 20 User Manual

Mag 20 Furnace Assembly, Operation and Parts
Assembly
The main body of your furnace is fully assembled and factory-tested. To facilitate packag-
ing, the valve rod and operating lever have not been factory-installed and you must do so,
prior to using the furnace as follows: Attach the operating lever spring to the operating lever.
Slide the valve rod on the operating lever as shown in Figure 19. Next, place the valve rod
and operating lever, into position as shown in Figure 20. Fasten the operating lever using the
furnished 5/8" 6/32" screw. Insert the lever adjusting screw and hex locknut as shown. Your
furnace is now ready for use.
Handling Lead
Lead, a substance known to cause birth defects, reproductive harm and other severe physi-
cal injury, must be handled with extreme care. Handle lead bullets or lead shot only in a well
ventilated area and ALWAYS wash hands after handling lead and before eating. Discharging
firearms in poorly ventilated areas, cleaning firearms, or handling ammunition, also may
result in exposure to lead. Have adequate ventilation at all times.
Figure 19.
Figure 20.
WARNING: Melting lead and casting lead objects will
expose you and others in the area to lead, which is known to
cause birth defects, other reproductive harm and cancer.
REDUCING EXPOSURE:
Lead contamination in the air, in dust, and on your
skin is invisible.
Keep children and pregnant women away during use and until cleanup is complete.
Risk can be reduced — but not eliminated — with strong ventilation; washing hands imme-
diately after use of these products before eating or smoking; and careful cleaning of surfaces
and floors with disposable wipes, after lead dust has had a chance to settle. Use a lead spe-
cific cleaner with EDTA, or a high-phosphate detergent (like most detergents sold for electric
dishwashers) and bag used wipes for disposal.
Use Strong Ventilation
Mag 20 Furnace Mag Dipper Furnace

Lyman Mag 20 Specifications

General

Brand	Lyman
Model	Mag 20
Category	Furnace
Language	English

Summary

Health and Environmental Precautions

Reducing Exposure to Lead

Lead contamination is invisible; prevent exposure via ventilation, handwashing, and cleaning.

Handling Lead Safely

Handle lead bullets or shot with extreme care in ventilated areas and wash hands.

Furnace Assembly and Operation

Attaching Operating Lever and Valve Rod

Instructions for attaching the operating lever spring, valve rod, and lever to the furnace.

Initial Furnace Operation

Turn thermostat counterclockwise, plug in, load metal, and perform initial warm-up.

Melting Cold Bullet Metal

Load furnace pot, set thermostat, and allow metal to reach desired temperature.

Safety Precautions

Basic Safety Garb and Area Preparation

Wear protective clothing, keep flammables away, and ensure good ventilation.

Safe Handling and Operation Practices

Avoid moisture, keep children away, do not smoke/eat, and never run dry.

Furnace Features and Maintenance

Warming Shelf Usage

Pre-heat mould blocks on the warming shelf for reduced warmup time.

Thermostat Function and Replacement

Thermostat controls melt temperature; factory replacement for aged components.

Heating System Preservation

Disconnect when not in use, use correct voltage, and run at lowest satisfactory temperature.

Mould Guide Usage and Parts

Mould Guide Alignment and Operation

Align sprue hole with pouring spout; fill cavities closest to operator first.

Mould Guide Parts List

List of parts for the Mould Guide assembly.

Parts List