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板が割れない釘の打ち方

<p><img data-attachment-id&equals;"10033" data-permalink&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;method&sol;nail&sol;attachment&sol;3602554&lowbar;s&sol;" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;3602554&lowbar;s&period;jpg&quest;fit&equals;640&percnt;2C427&amp&semi;ssl&equals;1" data-orig-size&equals;"640&comma;427" data-comments-opened&equals;"0" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"3602554&lowbar;s" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;3602554&lowbar;s&period;jpg&quest;fit&equals;300&percnt;2C200&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;3602554&lowbar;s&period;jpg&quest;fit&equals;637&percnt;2C425&amp&semi;ssl&equals;1" class&equals;"aligncenter size-large wp-image-10033" src&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;3602554&lowbar;s-637x425&period;jpg" alt&equals;"" width&equals;"637" height&equals;"425" &sol;><br &sol;>&NewLine;&NewLine;<&excl;-- WP QUADS Content Ad Plugin v&period; 2&period;0&period;98&period;1 -->&NewLine;<div class&equals;"quads-location quads-ad1" id&equals;"quads-ad1" style&equals;"float&colon;none&semi;margin&colon;0px&semi;">&NewLine;&NewLine;<&sol;div>&NewLine;<&sol;p>&NewLine;<h3 class&equals;"style3b">コースレッド<&sol;h3>&NewLine;<p>最近は、大工でも釘を使うことが非常に少なくなりました。<br &sol;>&NewLine;釘に代わって、コースレッドを使うことが多くなってきたからです。<br &sol;>&NewLine;コースレッドは、打つときに曲げてしまうこともありませんし、失敗しても簡単に抜けます。<br &sol;>&NewLine;さらに、コースレッドは接合力が釘の約4倍もあるようです。<br &sol;>&NewLine;<a href&equals;"https&colon;&sol;&sol;hb&period;afl&period;rakuten&period;co&period;jp&sol;ichiba&sol;237446fb&period;ecb00c15&period;237446fc&period;96045223&sol;&quest;pc&equals;https&percnt;3A&percnt;2F&percnt;2Fitem&period;rakuten&period;co&period;jp&percnt;2Fwoodpro&percnt;2F20viscrb51x100&percnt;2F&&num;038&semi;link&lowbar;type&equals;pict&&num;038&semi;ut&equals;eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0Iiwic2l6ZSI6IjI0MHgyNDAiLCJuYW0iOjEsIm5hbXAiOiJkb3duIiwiY29tIjoxLCJjb21wIjoiZG93biIsInByaWNlIjoxLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MCwiYW1wIjpmYWxzZX0&percnt;3D" target&equals;"&lowbar;blank" rel&equals;"nofollow sponsored noopener" style&equals;"word-wrap&colon;break-word&semi;"><img src&equals;"https&colon;&sol;&sol;hbb&period;afl&period;rakuten&period;co&period;jp&sol;hgb&sol;237446fb&period;ecb00c15&period;237446fc&period;96045223&sol;&quest;me&lowbar;id&equals;1191719&&num;038&semi;item&lowbar;id&equals;10023450&&num;038&semi;pc&equals;https&percnt;3A&percnt;2F&percnt;2Fthumbnail&period;image&period;rakuten&period;co&period;jp&percnt;2F&percnt;400&lowbar;mall&percnt;2Fwoodpro&percnt;2Fcabinet&percnt;2F20&percnt;2F20viscrb01&period;jpg&percnt;3F&lowbar;ex&percnt;3D240x240&&num;038&semi;s&equals;240x240&&num;038&semi;t&equals;pict" border&equals;"0" style&equals;"margin&colon;2px" alt&equals;"" title&equals;""><&sol;a><&sol;p>&NewLine;<h3 class&equals;"style3b">釘を使う理由<&sol;h3>&NewLine;<p>それでも釘がなくなることはありません。<br &sol;>&NewLine;その理由は、やっぱり強度は釘の方が高いからなんです。<br &sol;>&NewLine;釘は軟鉄なので、せん断(横)方向に力が加わった時、曲がります。<br &sol;>&NewLine;曲がってでも、粘り強く接合を保ちますが、コースレッドの場合、同じような状況では折れてしまいます。<br &sol;>&NewLine;この曲がる特性があるために、釘を打つ技術力の高さが必要だったわけですね。<br &sol;>&NewLine;でも、今では釘打ち機というものがあって、金づちで打つよりも10倍以上の速さで釘を打つことができるようになっております。<br &sol;>&NewLine;<a style&equals;"word-wrap&colon; break-word&semi;" href&equals;"https&colon;&sol;&sol;hb&period;afl&period;rakuten&period;co&period;jp&sol;ichiba&sol;13ef2658&period;92eb6ca8&period;13ef2659&period;0eb654f1&sol;&quest;pc&equals;https&percnt;3A&percnt;2F&percnt;2Fproduct&period;rakuten&period;co&period;jp&percnt;2Fproduct&percnt;2F-&percnt;2Fc78503700856493af03fddbedee3f3ee&percnt;2F&amp&semi;link&lowbar;type&equals;pict&amp&semi;ut&equals;eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0Iiwic2l6ZSI6IjQwMHg0MDAiLCJuYW0iOjEsIm5hbXAiOiJkb3duIiwiY29tIjowLCJjb21wIjoiZG93biIsInByaWNlIjowLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MX0&percnt;3D" target&equals;"&lowbar;blank" rel&equals;"nofollow sponsored noopener noreferrer"><img style&equals;"margin&colon; 2px&semi;" title&equals;"" src&equals;"https&colon;&sol;&sol;hbb&period;afl&period;rakuten&period;co&period;jp&sol;hgb&sol;1cf4fbf4&period;047d9207&period;1cf4fbf5&period;c2477a17&sol;&quest;me&lowbar;id&equals;1257812&amp&semi;item&lowbar;id&equals;10204565&amp&semi;pc&equals;https&percnt;3A&percnt;2F&percnt;2Fthumbnail&period;image&period;rakuten&period;co&period;jp&percnt;2F&percnt;400&lowbar;mall&percnt;2Fauc-mikawa-kiko&percnt;2Fcabinet&percnt;2F01482479&percnt;2F01763286&percnt;2Fimgrc0075041542&period;jpg&percnt;3F&lowbar;ex&percnt;3D400x400&amp&semi;s&equals;400x400&amp&semi;t&equals;pict" alt&equals;"" border&equals;"0" &sol;><&sol;a><&sol;p>&NewLine;<h3 class&equals;"style3b">割れない釘の打ち方<&sol;h3>&NewLine;<h4 class&equals;"style4a">釘の工夫<&sol;h4>&NewLine;<p>硬い板に釘を打つと、高確率で割れます。<br &sol;>&NewLine;これ、当たり前なんですよね。<br &sol;>&NewLine;その理由は釘の先端が尖っているからです!?<br &sol;>&NewLine;先端が尖っているので、板に釘を打つ時、板の横方向に引き裂く力が働きます。<br &sol;>&NewLine;<a href&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi1&period;jpg"><img data-attachment-id&equals;"10028" data-permalink&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;method&sol;nail&sol;attachment&sol;kugi1&sol;" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi1&period;jpg&quest;fit&equals;506&percnt;2C367&amp&semi;ssl&equals;1" data-orig-size&equals;"506&comma;367" data-comments-opened&equals;"0" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&bsol;u5408&bsol;u540c&bsol;u4f1a&bsol;u793e&bsol;u30a8&bsol;u30b9&bsol;u30ad&bsol;u30fc&bsol;u30b8&bsol;u30e3&bsol;u30d1&bsol;u30f3&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;1599736320&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"kugi1" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi1&period;jpg&quest;fit&equals;300&percnt;2C218&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi1&period;jpg&quest;fit&equals;506&percnt;2C367&amp&semi;ssl&equals;1" class&equals;"aligncenter size-medium wp-image-10028" src&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi1-300x218&period;jpg" alt&equals;"" width&equals;"300" height&equals;"218" &sol;><&sol;a><br &sol;>&NewLine;このまま進めば割れる確率はかなり高くなります。<br &sol;>&NewLine;なので、釘の先端をペンチなどでカットします。<br &sol;>&NewLine;<a style&equals;"word-wrap&colon; break-word&semi;" href&equals;"https&colon;&sol;&sol;hb&period;afl&period;rakuten&period;co&period;jp&sol;ichiba&sol;13ef2658&period;92eb6ca8&period;13ef2659&period;0eb654f1&sol;&quest;pc&equals;https&percnt;3A&percnt;2F&percnt;2Fproduct&period;rakuten&period;co&period;jp&percnt;2Fproduct&percnt;2F-&percnt;2Fccde4e9b676b963f3ab28009303af38f&percnt;2F&amp&semi;link&lowbar;type&equals;pict&amp&semi;ut&equals;eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0Iiwic2l6ZSI6IjMwMHgzMDAiLCJuYW0iOjEsIm5hbXAiOiJkb3duIiwiY29tIjowLCJjb21wIjoiZG93biIsInByaWNlIjowLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MX0&percnt;3D" target&equals;"&lowbar;blank" rel&equals;"nofollow sponsored noopener noreferrer"><img style&equals;"margin&colon; 2px&semi;" title&equals;"" src&equals;"https&colon;&sol;&sol;hbb&period;afl&period;rakuten&period;co&period;jp&sol;hgb&sol;1cf6f36e&period;8dce1a77&period;1cf6f36f&period;6bee816d&sol;&quest;me&lowbar;id&equals;1372666&amp&semi;item&lowbar;id&equals;10000247&amp&semi;pc&equals;https&percnt;3A&percnt;2F&percnt;2Fthumbnail&period;image&period;rakuten&period;co&period;jp&percnt;2F&percnt;400&lowbar;mall&percnt;2Fdatemono&percnt;2Fcabinet&percnt;2F06641194&percnt;2Fimgrc0072519637&period;jpg&percnt;3F&lowbar;ex&percnt;3D300x300&amp&semi;s&equals;300x300&amp&semi;t&equals;pict" alt&equals;"" border&equals;"0" &sol;><&sol;a><br &sol;>&NewLine;すると、釘を打つ時には垂直方向(真っ直ぐ下)に力が加わるように変化します。<br &sol;>&NewLine;<a href&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi2&period;jpg"><img data-attachment-id&equals;"10029" data-permalink&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;method&sol;nail&sol;attachment&sol;kugi2&sol;" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi2&period;jpg&quest;fit&equals;535&percnt;2C363&amp&semi;ssl&equals;1" data-orig-size&equals;"535&comma;363" data-comments-opened&equals;"0" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&bsol;u5408&bsol;u540c&bsol;u4f1a&bsol;u793e&bsol;u30a8&bsol;u30b9&bsol;u30ad&bsol;u30fc&bsol;u30b8&bsol;u30e3&bsol;u30d1&bsol;u30f3&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;1599736622&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"kugi2" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi2&period;jpg&quest;fit&equals;300&percnt;2C204&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi2&period;jpg&quest;fit&equals;535&percnt;2C363&amp&semi;ssl&equals;1" class&equals;"aligncenter size-medium wp-image-10029" src&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;kugi2-300x204&period;jpg" alt&equals;"" width&equals;"300" height&equals;"204" &sol;><&sol;a><&sol;p>&NewLine;<h4 class&equals;"style4a">釘を打つ場所<&sol;h4>&NewLine;<p>板は、節目の粗くなっている部分(赤い星部)が一番割れやすく、節目の細かい部分(青い星部)が割れにくいんです。<br &sol;>&NewLine;<a href&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&lowbar;s&period;jpg"><img data-attachment-id&equals;"10030" data-permalink&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;method&sol;nail&sol;attachment&sol;2604908&lowbar;s&sol;" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&lowbar;s&period;jpg&quest;fit&equals;640&percnt;2C427&amp&semi;ssl&equals;1" data-orig-size&equals;"640&comma;427" data-comments-opened&equals;"0" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;1&quot&semi;&rcub;" data-image-title&equals;"2604908&lowbar;s" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&lowbar;s&period;jpg&quest;fit&equals;300&percnt;2C200&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&lowbar;s&period;jpg&quest;fit&equals;637&percnt;2C425&amp&semi;ssl&equals;1" class&equals;"aligncenter size-medium wp-image-10030" src&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&lowbar;s-300x200&period;jpg" alt&equals;"" width&equals;"300" height&equals;"200" &sol;><&sol;a><br &sol;>&NewLine;節目の外になるほど、割れにくくなります。<br &sol;>&NewLine;例えば、釘を3本打ちたいと思った場合、黒丸部分あたりで打ちたくなると思いますが、この場合は真ん中は打たずに2本でやめるべきなんです。<br &sol;>&NewLine;<a href&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&period;jpg"><img data-attachment-id&equals;"10034" data-permalink&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;method&sol;nail&sol;attachment&sol;2604908&sol;" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&period;jpg&quest;fit&equals;640&percnt;2C427&amp&semi;ssl&equals;1" data-orig-size&equals;"640&comma;427" data-comments-opened&equals;"0" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;1&quot&semi;&rcub;" data-image-title&equals;"2604908&plus;" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&period;jpg&quest;fit&equals;300&percnt;2C200&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908&period;jpg&quest;fit&equals;637&percnt;2C425&amp&semi;ssl&equals;1" class&equals;"aligncenter size-medium wp-image-10034" src&equals;"https&colon;&sol;&sol;www&period;eskyjapan&period;com&sol;wp-content&sol;uploads&sol;2018&sol;09&sol;2604908-300x200&period;jpg" alt&equals;"" width&equals;"300" height&equals;"200" &sol;><&sol;a><&sol;p>&NewLine;<h3 class&equals;"style3b">さいごに<&sol;h3>&NewLine;<p>何百年も昔に建てられた木造建築物には、ほとんど釘が使われていませんが、ゼロではありません。<br &sol;>&NewLine;その時に使用されていた釘は、今のように綺麗に成形されている釘ではなく波打っていたりします。<br &sol;>&NewLine;これが、経年と共に気に馴染んでいき、すごく抜けにくく強度の高い結合を確保しているわけです。<br &sol;>&NewLine;私も便利なのでコースレッドをよく使用しますが、本当に大切な部分には釘を使うように考えています。<br &sol;>&NewLine;板は、本当に簡単に割れてしまうので、コースレッドを使用する場合でも、板の節目を意識してください。<br &sol;>&NewLine;&NewLine;<&excl;-- WP QUADS Content Ad Plugin v&period; 2&period;0&period;98&period;1 -->&NewLine;<div class&equals;"quads-location quads-ad3" id&equals;"quads-ad3" style&equals;"float&colon;none&semi;margin&colon;0px&semi;">&NewLine;&NewLine;<&sol;div>&NewLine;<br &sol;>&NewLine;&NewLine;<&excl;-- WP QUADS Content Ad Plugin v&period; 2&period;0&period;98&period;1 -->&NewLine;<div class&equals;"quads-location quads-ad4" id&equals;"quads-ad4" style&equals;"float&colon;none&semi;margin&colon;0px 0 0px 0&semi;text-align&colon;center&semi;">&NewLine;&NewLine;<&sol;div>&NewLine;<&sol;p>&NewLine;&NewLine;

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