GUIDED SELECTOR
Choose a diameter, then a coating and cutting length. Options with no matching tools stay visible in gray. Choose \u201CAny\u201D when you do not need to narrow a step.
';\n if(metric){\n panel.querySelector('.gp-scope-label').textContent='Cutting geometry';\n panel.querySelector('.gp-lead').textContent='Choose Square End or Ball Nose, with an optional flute count. Then refine by diameter, coating and cutting length. Gray options have no matching products; choose \u201CAny\u201D to broaden your selection.';\n var fluteField=el('fieldset');fluteField.innerHTML='';\n panel.querySelector('select').insertAdjacentElement('afterend',fluteField);\n }\n root.appendChild(panel);\n var result=el('section',undefined,'gp-results');result.id='em-results';result.hidden=true;result.tabIndex=-1;result.setAttribute('aria-label',context.dataset.title+' search results');panel.insertAdjacentElement('afterend',result);\n var scopeSelect=panel.querySelector('select'),status=panel.querySelector('.gp-status'),submit=panel.querySelector('.gp-submit'),retry=panel.querySelector('.gp-retry'),fallback=panel.querySelector('.gp-fallback'),searchForm=panel.querySelector('form'),searchInput=searchForm.querySelector('input'),searchButton=searchForm.querySelector('button'),searchError=panel.querySelector('.gp-search-error');\n Object.keys(scopes).forEach(function(h){var o=el('option',metric&&h===base?'Any geometry':scopes[h]);o.value=h;scopeSelect.appendChild(o);});\n var groups={},notes={};(metric?['f','d','c','l']:['d','c','l']).forEach(function(k){groups[k]=panel.querySelector('[data-step=\"'+k+'\"]');notes[k]=panel.querySelector('#gp-note-'+k);});\n function motion(){return matchMedia('(prefers-reduced-motion: reduce)').matches?'auto':'smooth';}\n function effective(){return {d:state.d||'any',c:state.c||'any',l:state.l||'any'};}\n function withFlutes(all,value){return !metric||value==='any'?all:all.filter(function(p){return value==='unknown'?!p.flutes:p.flutes===value;});}\n function candidates(){return withFlutes(products,fluteChoice);}\n function filtered(){return M.filter(candidates(),effective(),2);}\n function drawFlutes(){\n if(!metric)return;groups.f.textContent='';\n var pool=M.filter(products,effective(),2),choices=[['any','Any flute count'],['2','2 flutes'],['3','3 flutes'],['4','4 flutes']];\n if(products.some(function(p){return !p.flutes;}))choices.push(['unknown','Specifications on product page']);\n choices.forEach(function(o){var n=withFlutes(pool,o[0]).length,b=el('button',o[1],'gp-choice');b.type='button';b.dataset.gpChoice=o[0];b.dataset.gpStep='f';b.disabled=busy||n===0;b.setAttribute('aria-pressed',String(fluteChoice===o[0]));b.setAttribute('aria-describedby',notes.f.id);b.title=busy?'Checking current products\u2026':n?n.toLocaleString()+' matching products':'No matching products for your geometry and size selections';b.appendChild(el('small',busy?'\u2014':n.toLocaleString()));b.addEventListener('click',function(){fluteChoice=o[0];changed();});groups.f.appendChild(b);});\n if(nav)nav.querySelectorAll('a[data-em-flutes]').forEach(function(a){var n=withFlutes(pool,a.dataset.emFlutes).length,locked=busy||n===0;var count=a.querySelector('em');if(count){count.hidden=false;count.textContent=busy?'Checking products\u2026':n.toLocaleString()+' matching products \u2192';}a.setAttribute('aria-disabled',String(locked));a.style.opacity=locked?'0.45':'';a.style.pointerEvents=locked?'none':'';var u=new URL(location.pathname,location.origin);u.searchParams.set('em_group',scope);u.searchParams.set('em_f',a.dataset.emFlutes);Object.keys(state).forEach(function(k){u.searchParams.set('em_'+k,state[k]||'any');});u.searchParams.set('em_results','1');u.hash='em-results';a.href=u.pathname+u.search+u.hash;});\n notes.f.textContent=busy?'Checking current products\u2026':'Optional. Counts reflect your geometry and any diameter, coating and cutting length already selected. \u201CAny flute count\u201D includes all available flute counts.';\n }\n function ready(){return !!state.d&&!!state.c&&!!state.l;}\n function options(k){return M.options(products,k);}\n function draw(message){\n var active=document.activeElement,focus=active&&active.dataset.gpChoice,step=active&&active.dataset.gpStep;\n drawFlutes();\n ['d','c','l'].forEach(function(k,i){\n groups[k].textContent='';var locked=busy||(i>0&&!state.d)||(i>1&&!state.c);\n options(k).forEach(function(o){var s=effective();s[k]=o[0];var n=M.filter(candidates(),s,i).length,b=el('button',o[1],'gp-choice');b.type='button';b.dataset.gpChoice=o[0];b.dataset.gpStep=k;b.disabled=locked||n===0;b.setAttribute('aria-pressed',String(state[k]===o[0]));b.setAttribute('aria-describedby',notes[k].id);b.title=locked?'Complete the preceding step first':n?n.toLocaleString()+' matching products':'No matching products for your previous selections';b.appendChild(el('small',locked?'\u2014':n.toLocaleString()));b.addEventListener('click',function(){state[k]=o[0];changed(k);});groups[k].appendChild(b);});\n notes[k].textContent=busy?'Checking current products\u2026':locked?'Choose the preceding option first.':i===0?'Select the cutting diameter, not the shank. Inch and metric sizes are labeled separately.':i===1?'Coating counts reflect your chosen diameter.':'LOC is the length of the cutting flutes, not overall tool length. Counts reflect your diameter and coating.';\n });\n submit.disabled=busy||!ready()||filtered().length===0;searchButton.disabled=busy;panel.setAttribute('aria-busy',String(busy));\n submit.textContent=busy?'Checking products\u2026':!ready()?'Complete the three steps':'Show '+filtered().length.toLocaleString()+' matching end mills';\n status.textContent=message||(busy?'Checking the complete tool group\u2026':!state.d?'Start with a cutting diameter, or choose Any diameter.':!state.c?'Now choose an available coating.':!state.l?'Now choose an available cutting length.':filtered().length.toLocaleString()+' products match your selections.');\n if(step&&focus){var target=Array.from(groups[step].children).find(function(b){return b.dataset.gpChoice===focus&&!b.disabled;});if(target)target.focus({preventScroll:true});}\n }\n function reconcile(){var clear=[];if(metric&&fluteChoice!=='any'&&!candidates().length){fluteChoice='any';clear.push('flute count');}if(state.d&&!M.filter(candidates(),{d:state.d},0).length){state.d=null;state.c=null;state.l=null;clear.push('diameter');}if(state.c&&!M.filter(candidates(),effective(),1).length){state.c=null;state.l=null;clear.push('coating');}if(state.l&&!filtered().length){state.l=null;clear.push('cutting length');}return clear;}\n function changed(){revision++;var cleared=reconcile();query='';result.hidden=true;searchError.hidden=true;draw(cleared.length?'The previous '+cleared.join(' and ')+' no longer matches. Please select an available option.':null);saveUrl(false);}\n async function singleCatalog(handle,signal,owner){\n var hit=cache.get(handle);if(hit&&Date.now()-hit.time<60000)return hit.products;\n async function page(n){var timer=setTimeout(function(){owner.abort();},15000);try{var r=await fetch('/collections/'+encodeURIComponent(handle)+'?view=fm-gp-finder&page='+n,{signal:signal,cache:'no-store',credentials:'same-origin'});if(!r.ok)throw Error('Catalog unavailable');var d=await r.json();if(d.collection!==handle||d.page!==n||!Number.isInteger(d.total)||d.total<0||!Number.isInteger(d.pages)||d.pages<0||d.pages>100||!Array.isArray(d.products))throw Error('Invalid catalog');return d;}finally{clearTimeout(timer);}}\n var first=await page(1),all=first.products.slice();\n for(var start=2;start<=first.pages;start+=4){var tasks=[];for(var p=start;p<=Math.min(start+3,first.pages);p++)tasks.push(page(p));var batch=await Promise.all(tasks);batch.forEach(function(d){if(d.total!==first.total||d.pages!==first.pages||d.currency!==first.currency)throw Error('Catalog changed');all.push.apply(all,d.products);});}\n if(all.length!==first.total||new Set(all.map(function(p){return p.id;})).size!==all.length)throw Error('Incomplete catalog');\n if(all.some(function(p){return !p.id||typeof p.title!=='string'||typeof p.handle!=='string'||!Array.isArray(p.skus)||typeof p.priceValue!=='number';}))throw Error('Invalid product');\n all=all.map(M.parse);\n cache.set(handle,{products:all,time:Date.now()});return all;\n }\n async function catalog(key,signal,owner){var all=[];for(var h of sources[key]||[]){all.push.apply(all,await singleCatalog(h,signal,owner));}var unique=Array.from(new Map(all.map(function(p){return [p.id,p];})).values());return unique.filter(function(p){return M.shortcut(p,scopeRules[key]);});}\n async function load(preserve){var v=++revision;if(controller)controller.abort();controller=new AbortController();var owner=controller,handle=scope;if(!preserve)state={d:null,c:null,l:null};busy=true;products=[];result.hidden=true;retry.hidden=true;fallback.hidden=true;draw('Checking '+scopes[scope]+'\u2026');try{var all=await catalog(handle,owner.signal,owner);if(v!==revision)return false;products=all;busy=false;var cleared=reconcile();draw(cleared.length?'The catalog changed. Please select the available options again.':null);return !cleared.length;}catch(e){if(v!==revision)return false;busy=true;draw('We could not verify the complete tool group. Please retry. Your filters have not been applied to unverified results.');panel.setAttribute('aria-busy','false');submit.textContent='Products not verified';retry.hidden=false;fallback.href='/collections/'+encodeURIComponent((sources[scope]||baseHandles)[0])+'?em_native=1';fallback.hidden=false;return false;}}\n function summary(){return (metric?[['Cutting geometry',scope===base?'Any geometry':scopes[scope]],['Number of flutes',fluteChoice==='any'?'Any flute count':fluteChoice==='unknown'?'Specifications on product page':fluteChoice+' flutes']]:[['Tool group',scopes[scope]]]).concat(['d','c','l'].map(function(k,i){var o=options(k).find(function(o){return o[0]===(state[k]||'any');});return [['Cutting diameter','Coating','Cutting length'][i],o?o[1]:'Any'];}));}\n function saveUrl(results){var u=new URL(location.href);['em_group','em_d','em_c','em_l','em_q','em_sort','em_results'].forEach(function(k){u.searchParams.delete(k);});if(metric){u.searchParams.delete('em_f');u.searchParams.set('em_f',fluteChoice);}u.searchParams.set('em_group',scope);Object.keys(state).forEach(function(k){if(state[k])u.searchParams.set('em_'+k,state[k]);});if(query)u.searchParams.set('em_q',query);if(results){u.searchParams.set('em_results','1');u.searchParams.set('em_sort',sort);u.hash='em-results';}else u.hash='em-finder';history.replaceState(null,'',u);}\n function appendProducts(){var grid=result.querySelector('.gp-result-grid'),start=shown,end=Math.min(shown+12,matches.length);for(var i=shown;i