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US Customers: Orders under $800, BEFORE DISCOUNTS, are not subject to tariffs
NOTE: There will be no shipping from April 14th to April 18th. Shipping will resume April 21.

Fast Tracks own Track Building Solder Flux

SP-0063
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14 In Stock

We can ship the SP-0063 immediately. If you order more than what we have available, we will hold your order and add additional units required to our production queue. The lead time for this product is shown above.

PRICE : $10.00(USD)

14 in stock

Fast Track's own Track Building Soldering flux is what we recommend for soldering trackwork in Fast Tracks assembly fixtures.

This flux ensures that surfaces are thoroughly clean and ready for soldering, making it easy for even novice modelers to get great results. Only the smallest amount of solder paste is needed, so a single can of paste will be more than enough to build hundreds of feet of trackwork and switches.

Easy cleanup with water, will not corrode or turn green over time.

Fast Tracks track building acid-based soldering flux is only suitable for soldering trackwork. Do not use this flux for soldering electrical connections or electronic components. Be sure to thoroughly clean the track using a stiff wire brush and warm water after soldering to remove all traces of flux.

Download the MSDS for Fast Tracks Track Building Flux

2oz. Container.

Before using this product, we recommend watching the Soldering Trackwork Using Acid-Based Flux video for essential tips and techniques.

6 reviews for Fast Tracks own Track Building Solder Flux

  1. 5 out of 5

    Andreas Werder (verified owner)

    Why would you buy a solder flux from Fast Tracks when you get one for half the price or less on eBay? It's very simple: you don't just buy flux; you buy part of a solution. All of its components are well aligned and optimized for the process of hand laying track and turnouts. There is no hard to remove solid residue after soldering and the remaining traces of the flux can be easily washed away with water. An excellent product!

  2. 5 out of 5

    Edward Gascoigne (verified owner)

    Very satisfied, this flux works well.

  3. 5 out of 5

    David Loberg (verified owner)

    Can you buy soldering flux just about anywhere else? Yes. Can you save a few cents? Possibly. Will it work as well as Fast Tracks? Maybe. But this product works great, cleanup is quick and when used with their micro brushes is super easy to apply. Why mess with someone else's flux and be left guessing? A great, easy to use product that's proven for the application and the jar will last you half of a lifetime.

  4. 5 out of 5

    Patrick Herzog (verified owner)

    Perfect solution for soldering especially when used with the micro brush. Works well as advertised, easy to cleanup. This little package may be sufficient for a very high number of solder points.

  5. 5 out of 5

    David Reinhart (verified owner)

    I don't have a lot of experience using solder or flux. I can't tell you what it is for or why it works. I CAN tell you that using this flux makes the building of my turn outs a breeze. The solder flows nicely, and the mess is minimal.

  6. 4 out of 5

    Dennis Glynn (verified owner)

    A good quality paste flux.

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