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Tenacity Flux, 25g

Product code: C92
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Tenacity Flux, 25g

Price: £5.65 / each

Sorry, this item is currently not in stock.

This Tenacity Flux powder is suitable for soldering at medium temperatures (600 – 900ºc), making it ideal for use with medium and hard solder.

How to use:

The powder should be mixed to a smooth paste with water (a few drops of detergent may be added too) and applied to the clean and de-greased solder joint with a brush before assembly (our non-contaminating flux brush is ideal for this). Extra flux paste should then be applied to either side of the join to ensure a good flow and a solid join is achieved. Apply heat to the whole piece to ensure that the correct temperature is achieved and maintained until the solder melts and flows. The residues left behind with this flux are sometimes hard to remove with water so the join may need to be filed or mechanically cleaned after soldering.

  • 25g
  • Solder temperatures: 600 – 900ºc

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Catherine Warwick
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Dorota Todd
I just wanted to say how impressed I am with the quality of pearls in my recent order! Thank you so much for taking time and matching them into pairs, it's very appreciated. Thank you and I am definitely going to buy at your store in the future.
Mihaela Ciubotaru
I am very happy with my products... it is wonderful to have a reliable source of materials and gems with a fast delivery and a lot of tips on how to use the tools we buy.
Marshal
Thank you to the lady who went to a great deal of trouble to find a very small opal that fitted a bezel cup. The work is now complete and looks very nice - my wife is delighted with the result.
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Maggi Henman
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Frank Wilson
It is always a joy to deal with your Company and your hints and tips always help me to improve my skills and encourage my interests. Thank you for caring about us small enthusiastic silversmiths!
Jaquie
It can be difficult to order gemstones online - no such worries with Kernowcraft - you really do care about your products & clients and it shows.
Joel Martin
Great, easy to navigate website with wonderful clear photographs. I look forward to receiving my order... it's going to be like Christmas!
Daniel Coe
The customer service I have received from you and the help has been second to none. If only all companies were so helpful and understanding that i am a complete newbie. The retail world would be a better place.
Deborah Roberts-Barter
I have sent a couple of email enquiries today, which have been really quickly answered. This customer service is what made me order with you straight away!
April Luescher
Beautiful quality and colours - I rarely buy semi-precious stones anywhere else these days. Very helpful, superb service, speedy delivery. What more could anyone want?
Gloria Williams
I just came across your online shop and my first reaction was wow! It has everything i need to carry on with my jewellery making. I've seen things that i have been looking for and couldn't find in so many other shops!
Claire
I just wanted to say a big thank you for the beautiful sapphires that arrived today. Hannah picked out just what I wanted and I’m over the moon with them.
Catriona
Thank you for my recent order as I'm blown away by all the lovely pieces. I don't really know what to start work on first. Thank you for supplying top quality items on a easy to use website. 
Julia Schofield
I’ve used Kernowcraft as a supplier for findings and pearls since beginning my business 8 years ago, because I know I can absolutely rely on the quality I get. The service is pretty impeccable too.
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Christine Wood
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A
I added a special request for moonstones with strong blue/green flashes and received 3 briolettes which were exactly that - some of the prettiest moonstones I’ve seen. Thank you!
Hayley Meredith
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Kim Thomson
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Lenna
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Frank Wilson
I have grown as a jewellery maker over the last year or so due to the encouragement the team have given me - they are all experienced jewellery makers or keen crafters. They have helped to guide me through my inventory, offered helpful tips and advice on all manner of silver working.
Helen
Just wanted to say thank you for picking such beautiful stones for my order. I'm halfway through making a ring for my daughter and the rose cut rainbow moonstones are particularly yummy. Thank you!
Eve
The stones are excellent quality, and the special request I put in for dark citrines and paired malachites has been met perfectly. I am delighted with Kernowcraft, and will be back!
George Inglis
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Jill Hammersely
I just wanted to say a massive thank you to the team, particularly the ladies that helped me yesterday. Delivery took less than 24hrs, that's amazing. The quality of both cabochons and settings are stunning.
Denise Mountain Pike
I recently ordered a couple of replacement stones from you and I'd just like to say how happy I am with my purchase and very impressed with the friendly helpful service you gave. Thank you very much.
Lauren Jodie Piercy
Beautiful gemstones and a lot of choice. Running competitions and being interactive as well really sets them apart. Keep up the interesting content.
Vivienne Sadler
Always too many temptations, but a joy to look through. Thank you for such good service. I have to be very strict with myself when I visit your website!
Sarah Tiley
Whenever I feel unsure as to where to purchase any stones or jewellery requirements I always go back to what is familiar. Thank you Kernowcraft for being true to your customers.
Lydia Farrow
Just to say that I have always had the best possible results for every order - however small and all your products are of excellent quality.
Rhiannon Piper
The opal I received is absolutely amazing and just perfect. Its such a beautiful stone and I tried it with my wedding dress yesterday and its just set it off so well.
Helen Bowles
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Claire Hall
Kernowcraft is my go to for all my gemstones! Their stones are the first ones I show when offering my clients stone choices and I can't recommend their customer service enough! This is a company that cares!
Lynn Carson
I bought the sand dollar charm to make a holiday bracelet. It’s really lovely, subtle and pretty detail. Perfect piece and exactly as described.