A tool of specific size such as an N53 Mandrel cannot work equally well on both the beginning section and the bottom section of the slide. This is because the first 4 inches of the slide is from .002 to .010 (.05mm to .15mm) smaller than the rest of the slide on 90% of all trombones. This is caused by shrinkage of the tubing when the hand brace or outer sleeve is soldered on. This can also be caused by the slide being jarred in such a way that the hand brace is pushed slightly into the slide. Using the tool is simple.
First, clean the trombone slide thoroughly with F7 Brasso, Z10 Cold Cleaner and a dry cheesecloth rag as per our standard process. Put the tool in the vise and slide the trombone slide loosely over the tool. Turn the adjusting nut until the expandable working part of the tool is snug under a portion of the tubing that is dent free. Then, merely slide the trombone slide back and forth over the working part of the tool with a slightly rotating movement. This will produce a smooth burnishing action. The tool is polished chromed steel. It will not burr or scrape the inside tubing. Rotate until the slide feels smooth. Remove the slide and wipe it out with a clean length of X50 Cheesecloth. The dent will probably have disappeared; if not, repeat the operation with the adjusting nut a little tighter.
- N10 For tenor inner slides
- N11 For tenor outer slides
- N11A For bass trombone outer slides
- Can be used with N12 ring
Need Help with this item?
Our specialist trained staff are able to help you. Please contact us or call us on 01628 630800
Why Buy from Dawkes Music?
Dawkes Music & Windcraft Ltd are a globally recognised UK based Music Industry company that have expert staff who specialise in products, performance, teaching and repairing in the brass and woodwind sector.
Buy with confidence knowing that the shop you're dealing with has been awared a Feefo Gold Trusted Retailer award which recognises our hard work and consistent excellent customer service.
14 Day Approval
Try your item at home, in a lesson, in the band and make sure it's perfect for you. If you are not convinced we can refund the item in full upon return. (£3 re-stocking fee on any mouthpieces, approval not available on reeds).
All in stock items are usually dispatched within 24 hours, express delivery options are available at the checkout, including next day delivery.
We carefully choose and stock the best products on the market, be it the newest mouthpiece or official replacement spare parts for instruments. We keep over 8,000 lines in stock covering everything Woodwind & Brass.
We carefully check pricing to ensure our customers get the best deals with unrivalled pre-sale advice and after-sales care.
Top Quality After Sales Service
We have 18 members of staff in-store and on the telephone 6 days a week, and our online service is 24/7. Experience you can trust with over 40 years in the business and a third generation specialist family business.