Physique solder has lengthy been the selection of customized and restoration outlets for filling seams, leveling uneven physique work, and blending-in customized options. Even one of the best polyester physique fillers obtainable at the moment can not match the superior adhesion, energy and general sturdiness that physique solder offers. Each our leaded and lead-free physique solders will be utilized with an simply obtainable propane torch.

Physique solder melts at a comparatively low temperature and is pushed or unfold into place with a tough wooden paddle to type the fundamental contour. Additional shaping is often finished with a rough file. Typically a skim coat of polyester physique filler like our Eastwood Contour Polyester Primer Direct to Metal Surfacer, and others, is utilized over the solder for last shaping.



Conventional lead-based physique solders have been the selection of restorers and customizers for over 80 years. All of the lead-based body solder kits that Eastwood beforehand bought have used bars consisting of 30% tin and 70% lead. This combine produces a solder that’s simply utilized to vertical and horizontal surfaces, with a low spreadable working vary (361° to 489° F). Tensile energy is 6140 psi. Tensile energy is usually known as Final Tensile Energy and refers back to the quantity of power required to drag a substance aside. (On this case, a soldered joint that covers precisely one sq. inch would require 6140 lbs. of power to drag it aside). Physique solders containing lead MUST be leveled by submitting — sanding isn’t an choice, as a result of sanding lead-based physique solder would put poisonous lead mud within the air, and grit from the sandpaper might embed within the solder and trigger corrosion. The low melting temperature makes the 30/70 lead-based solder barely simpler to make use of than our lead-free solder.


Lead-free body solder is a latest growth that’s safer and stronger than lead-based physique solders. Our lead-free solder works effectively on horizontal and vertical surfaces. This solder’s spreadable (or “plastic”) vary is 428° to 932°F (220° to 505°C), although one of the best working vary is 535° to 660°F (280° to 350°C). Tensile energy is larger than 9000 psi. The elevated energy makes the lead-free solder extra acceptable for building-up door and different panel edges, and magnificence traces. Leveling will be finished by submitting and sanding since no lead particles shall be dispersed. (Be sure you put on a mud masks as it is best to for any metal-grinding operation.) This Eastwood formulation is without doubt one of the few solders that may truly be powder-coated and cured at 400°F (with correct temperature management) with out deforming. The truth that the lead-free solder can stand up to powder-coating temperatures is a giant profit as a result of it offers a substitute for Lab Metallic for filling irregularities in iron and metal elements that shall be powder-coated. Needless to say most of Eastwood’s powders are cured at 400°F — that is 28 levels lower than the place this solder begins to melt. The solder is weak at 400°F however won’t deform.


Each lead-based and lead-free physique solders are utilized equally. Each have to be utilized to wash naked metal. Each require tinning. Our tinning provides serve the twin operate of chemically cleansing the floor whereas depositing a skinny coating of (principally tin) steel, which offers an excellent bond to the subsequently utilized solder. After wiping away the excess tinning materials, the floor is re-heated and solder utilized. As soon as adequate solder to stage the floor has been utilized, the world is re-heated and the paddle is used to stage the restore. Within the case of the lead-based solder, the paddle is used like a knife spreading butter. Within the case of the lead-free solder, the paddle is used to push the solder into the floor. The “spreading” approach will not be really useful within the case of the lead-free as a result of impurities might turn out to be trapped..


Each physique solders are utilized in principally the identical method. If you happen to can work in lead, you’ll be able to work with lead free. The lead-free body solder has the benefit of being stronger and safer, and will be sanded and filed. Due to its barely increased melting level, lead free solder can also be appropriate for powder coating.

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