{"id":4363192926256,"title":"N58A Ground Casing Mandrel .631-.700\"","handle":"n58a-ground-casing-mandrel-631-700","description":"\u003cp\u003eThese are solid steel mandrels used to remove dents from valve casings and to straighten casings if they are sprung. Easier, faster and more safe to use than reamers and almost impossible to damage a casing using these mandrels. They are not adjustable, so you must know the size you need or the brand and model of the instrument. Precision measuring is helpful.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0397\/5557\/files\/N2858_SIZES.pdf?v=1717596332\" title=\"chart\"\u003eSize Chart\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e \u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eThe recommended procedure for use:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eMount the instrument on a wood assembly mandrel in a vise.\u003cbr\u003eThoroughly clean the casings with\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f7-brasso-8oz?variant=1101999540\"\u003e\u003cstrong\u003eF7 Premiere Metal Polish\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/z10-cold-cleaner?variant=12033766020\"\u003e\u003cstrong\u003eZ10 Cold Cleaner\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cbr\u003eSelect the proper size mandrel for the instrument and insert it all the way into the casing.\u003cbr\u003eWhen ready to hit the mandrel, STRIKE SHARPLY. It is the quantity of hits that raises the dents and straightens casings, not the force used. Strike firmly-not hard.\u003cbr\u003eUse the side of a\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f5-rawhide-mallet?variant=1101999508\" title=\"F5\"\u003e\u003cstrong\u003eF5 rawhide mallet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eand strike the small end of the mandrel with many small and repeated taps. Use sideways and up and down hits. Aim at port intersections.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eORDER THE EXACT SIZE. THESE MANDRELS ARE NOT ADJUSTABLE\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eTO ORDER THE CORRECT SIZE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder by the O.D. of the piston. Example: Yamaha .664 Due to the differences in manufacturing over the years it is highly RECOMMENDED to measure the valve piston.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eThese mandrels are divided into 3 size groups:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e(\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n58a-size?variant=13542600772\"\u003eN58A\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ePart # for sizes: .630-.700,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n58c-size?variant=13542604100\"\u003eN58C:\u003c\/a\u003e\u003c\/span\u003e .701-.885,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n58d-size?variant=13542608964\"\u003e\u003cspan\u003eN58D:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003e.888-1.400)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/collections\/brasswind-tools\/products\/n58a_brand?variant=13537643524\"\u003eN58A For cornet and trumpet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n58c-ground-casing-mandrel-714-885?_pos=1\u0026amp;_sid=9674aece4\u0026amp;_ss=r\" title=\"n58c\"\u003e\u003cstrong\u003e\u003cspan\u003eN58C For alto horn, valve trombone, baritone and euphonium\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n58d-ground-casing-mandrel-886-1-400?_pos=2\u0026amp;_sid=9674aece4\u0026amp;_ss=r\" title=\"n58d\"\u003e\u003cspan\u003e\u003cstrong\u003eN58D For sousaphone, Tuba, Bari\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e","published_at":"2019-11-26T05:46:42-05:00","created_at":"2019-11-26T06:05:36-05:00","vendor":"Ferree's Tools Inc","type":"Brasswind","tags":["General Tools","Trumpet","Tuba"],"price":6495,"price_min":6495,"price_max":7500,"available":true,"price_varies":true,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":40185438371888,"title":"0.643","option1":"0.643","option2":null,"option3":null,"sku":"N58A-643","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.643","public_title":"0.643","options":["0.643"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":31,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438404656,"title":"0.645","option1":"0.645","option2":null,"option3":null,"sku":"N58A-645","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.645","public_title":"0.645","options":["0.645"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":46,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438437424,"title":"0.649","option1":"0.649","option2":null,"option3":null,"sku":"N58A-649","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.649","public_title":"0.649","options":["0.649"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":15,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438470192,"title":"0.65","option1":"0.65","option2":null,"option3":null,"sku":"N58A-650","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.65","public_title":"0.65","options":["0.65"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":17,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438502960,"title":"0.651","option1":"0.651","option2":null,"option3":null,"sku":"N58A-651","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.651","public_title":"0.651","options":["0.651"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":16,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438535728,"title":"0.657","option1":"0.657","option2":null,"option3":null,"sku":"N58A-657","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.657","public_title":"0.657","options":["0.657"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":41,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438568496,"title":"0.658","option1":"0.658","option2":null,"option3":null,"sku":"N58A-658","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.658","public_title":"0.658","options":["0.658"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":29,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438601264,"title":"0.66","option1":"0.66","option2":null,"option3":null,"sku":"N58A-660","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.66","public_title":"0.66","options":["0.66"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":18,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438634032,"title":"0.661","option1":"0.661","option2":null,"option3":null,"sku":"N58A-661","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.661","public_title":"0.661","options":["0.661"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":11,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438666800,"title":"0.664","option1":"0.664","option2":null,"option3":null,"sku":"N58A-664","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.664","public_title":"0.664","options":["0.664"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":18,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438699568,"title":"0.665","option1":"0.665","option2":null,"option3":null,"sku":"N58A-665","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.665","public_title":"0.665","options":["0.665"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":13,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438732336,"title":"0.668","option1":"0.668","option2":null,"option3":null,"sku":"N58A-668","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.668","public_title":"0.668","options":["0.668"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":37,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438765104,"title":"0.672","option1":"0.672","option2":null,"option3":null,"sku":"N58A-672","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.672","public_title":"0.672","options":["0.672"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":483,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438797872,"title":"0.673","option1":"0.673","option2":null,"option3":null,"sku":"N58A-673","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.673","public_title":"0.673","options":["0.673"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":49,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438830640,"title":"0.674","option1":"0.674","option2":null,"option3":null,"sku":"N58A-674","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.674","public_title":"0.674","options":["0.674"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438863408,"title":"0.68","option1":"0.68","option2":null,"option3":null,"sku":"N58A-680","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.68","public_title":"0.68","options":["0.68"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":39,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438896176,"title":"0.682","option1":"0.682","option2":null,"option3":null,"sku":"N58A-682","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.682","public_title":"0.682","options":["0.682"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":30,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438928944,"title":"0.684","option1":"0.684","option2":null,"option3":null,"sku":"N58A-684","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.684","public_title":"0.684","options":["0.684"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438961712,"title":"0.685","option1":"0.685","option2":null,"option3":null,"sku":"N58A-685","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.685","public_title":"0.685","options":["0.685"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":47,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185438994480,"title":"0.646","option1":"0.646","option2":null,"option3":null,"sku":"N58A-646","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.646","public_title":"0.646","options":["0.646"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":49,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185439027248,"title":"0.652","option1":"0.652","option2":null,"option3":null,"sku":"N58A-652","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.652","public_title":"0.652","options":["0.652"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185439060016,"title":"0.662","option1":"0.662","option2":null,"option3":null,"sku":"N58A-662","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.662","public_title":"0.662","options":["0.662"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":47,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185439092784,"title":"0.666","option1":"0.666","option2":null,"option3":null,"sku":"N58A-666","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.666","public_title":"0.666","options":["0.666"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":46,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185439125552,"title":"0.667","option1":"0.667","option2":null,"option3":null,"sku":"N58A-667","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - 0.667","public_title":"0.667","options":["0.667"],"price":6495,"weight":0,"compare_at_price":null,"inventory_quantity":50,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40133819203632,"title":"SPECIAL SIZE IN NOTES","option1":"SPECIAL SIZE IN NOTES","option2":null,"option3":null,"sku":"N58AS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N58A Ground Casing Mandrel .631-.700\" - SPECIAL SIZE IN NOTES","public_title":"SPECIAL SIZE IN NOTES","options":["SPECIAL SIZE IN NOTES"],"price":7500,"weight":0,"compare_at_price":null,"inventory_quantity":34,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58A.jpg?v=1574878683","\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58ACD_0a93f813-d65d-4902-b351-29b33c6b6254.jpg?v=1574883900","\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7546.jpg?v=1574883399"],"featured_image":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58A.jpg?v=1574878683","options":["Size"],"media":[{"alt":"N58A Ground Casing Mandrel","id":5785713999920,"position":1,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58A.jpg?v=1574878683"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58A.jpg?v=1574878683","width":3648},{"alt":"N58 Ground Casing Mandrels: A-C-D","id":5786278428720,"position":2,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58ACD_0a93f813-d65d-4902-b351-29b33c6b6254.jpg?v=1574883900"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N58ACD_0a93f813-d65d-4902-b351-29b33c6b6254.jpg?v=1574883900","width":3648},{"alt":"N58 Mandrel in use","id":5786320863280,"position":3,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7546.jpg?v=1574883399"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7546.jpg?v=1574883399","width":3648}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eThese are solid steel mandrels used to remove dents from valve casings and to straighten casings if they are sprung. Easier, faster and more safe to use than reamers and almost impossible to damage a casing using these mandrels. They are not adjustable, so you must know the size you need or the brand and model of the instrument. Precision measuring is helpful.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0397\/5557\/files\/N2858_SIZES.pdf?v=1717596332\" title=\"chart\"\u003eSize Chart\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e \u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eThe recommended procedure for use:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eMount the instrument on a wood assembly mandrel in a vise.\u003cbr\u003eThoroughly clean the casings with\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f7-brasso-8oz?variant=1101999540\"\u003e\u003cstrong\u003eF7 Premiere Metal Polish\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/z10-cold-cleaner?variant=12033766020\"\u003e\u003cstrong\u003eZ10 Cold Cleaner\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cbr\u003eSelect the proper size mandrel for the instrument and insert it all the way into the casing.\u003cbr\u003eWhen ready to hit the mandrel, STRIKE SHARPLY. It is the quantity of hits that raises the dents and straightens casings, not the force used. Strike firmly-not hard.\u003cbr\u003eUse the side of a\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f5-rawhide-mallet?variant=1101999508\" title=\"F5\"\u003e\u003cstrong\u003eF5 rawhide mallet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eand strike the small end of the mandrel with many small and repeated taps. Use sideways and up and down hits. Aim at port intersections.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eORDER THE EXACT SIZE. THESE MANDRELS ARE NOT ADJUSTABLE\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eTO ORDER THE CORRECT SIZE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder by the O.D. of the piston. Example: Yamaha .664 Due to the differences in manufacturing over the years it is highly RECOMMENDED to measure the valve piston.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eThese mandrels are divided into 3 size groups:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e(\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n58a-size?variant=13542600772\"\u003eN58A\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ePart # for sizes: .630-.700,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n58c-size?variant=13542604100\"\u003eN58C:\u003c\/a\u003e\u003c\/span\u003e .701-.885,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n58d-size?variant=13542608964\"\u003e\u003cspan\u003eN58D:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003e.888-1.400)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/collections\/brasswind-tools\/products\/n58a_brand?variant=13537643524\"\u003eN58A For cornet and trumpet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n58c-ground-casing-mandrel-714-885?_pos=1\u0026amp;_sid=9674aece4\u0026amp;_ss=r\" title=\"n58c\"\u003e\u003cstrong\u003e\u003cspan\u003eN58C For alto horn, valve trombone, baritone and euphonium\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n58d-ground-casing-mandrel-886-1-400?_pos=2\u0026amp;_sid=9674aece4\u0026amp;_ss=r\" title=\"n58d\"\u003e\u003cspan\u003e\u003cstrong\u003eN58D For sousaphone, Tuba, Bari\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e"}