ureslearn the secrets toRouting Dovetailsit easy. And with just a few simple trps,lenplate pasition detetmin*It's hard to think of a woodworkingjoint you can cui fasier than a halfblinddoletail - boft parls of thejoint are cut at ihe sme time with ahand held router ald a haf-biinddovetail jig (photo above).The real challenge is sening up adovetail jig so that routfi8 dle jointis fast, easy, and accunie. Anddoing that depends on fte style ofdovetaii jig you have (or might beLhinldng aboui getiing).A tAtt 0I nvo JlGt. Page through anumber of woodworking catalogsand it miSht seem like ihere areover a dozen different dovetail jigs.But ifyou look closely, you'il noticethat mosi of d1em resemble one ofthe half-blnd dovetail jigs at left.What's the difference? On ihejig at the far left, the depih of thesocket that accepts ihe tail isNo. <strong>154</strong>
established wh€n a bushingreaches the end of the slot on thetemplat€. O':r the other ji8, the baseof the router contacts an adjustablefence io limit the cutting depth. Thebushing simply guid€s the router inand out of the templat€ slots.I know this do€sn't sound likemuch of a difference. But to be honest,the dovetail jig wift the fencetook me a littl€ longer to "t!veak"before I was able to rout perfecthaff-blind dovetails.lflt TEIILAT!. Another diff€renceworth mentioning is th€ tempiatethat comes with the jig. A ii8 with ametal template wi probably bemore expensive (around $100).While a jig with the plastic template can be foud for 950.I prefer a metal iamplate sinceit's iess likely to sag. As you'rerouting, itjust feels more secure. Toprovide solid support on the plastictemplate, I had to slip a scrappiece in place to support the opposite end. You can see this in themain photo on the opposite page.Note: A couple scrap pieces are agood idea with ei*Er jig since *Ieyaliow the clamp bais to hold theworkpieces more seflIelyA more important considerationregarding the template is how itcontrols the spacing of the dovetails.Mo€t templates are desiSned to cutr/,'rwide dovetails spaced 7/s'apart. Otherjigs spac€ fie dovetaijs 1,, or 1,/s,, apan. (Weuse rhe 7/s spacingWIy is that important? Thespacing determines the width(height) of the drawers. Thedrawer heights should be a multiple of t}le spacing. This way, you'[be sure to end uP with a joint that'ssymmetri€al - a perfect haff pinon both the toP and the bottom, astITIllG UP IHI llc. There are a fewkey steps you'll need to be con'cemed with when you initialy setup a half blind dovetailjig. You cansee how I did &is for a dovetail iigwith a fence in the How-To at right.Noie: When you're making adrawer or box, half th€ joints arecut on ihe left side of the jig andhalf are cut on the iight. So you'nneed to repeat the setup for thestop at the other €nd of the jig onceyou've compieted the initial setup.The process for setting up theother dovetail jig is virtuallyidentical. Since there's no fence,the template simply has to bepositioned according to theinstructions that come with thejig. Most often this isjust a matterof measuring from the ba.k of atemplate slot to the end of th€llc lllsTlu(Trcils. There is onething to meniion about the instruc'tions that come with some of thefence style dovetail jigs. Whii€ ihejigs work great once they're s€t up,I felt that the instructions that camewith the dovetail jig weren't asclear as I thought they codd be.Ifs always best to thin]( througheach step of the process and do alittle "common sense check" beforemaking any changes. And alwaysmake a "dry run" with the routeroff before actually routing anyworkpieces. This way, you won'tinadvertently €ut into the workpiece,template, or jig. (B€lieveme, it's easy to do.)(Un c 0IPIH. Finally, the last thingio do tefor€ making any test culs is !oinstal the bushing and dovetail bitieconmended by the llmuJactuer.For the depth ot cut most manuJacturerssuggest an initial settinSamuid r/r' to e/r6,. rve romd thatto be a good starting point.How-Tor SetUthePosition Side. For a symmetrical dovetail layout,position the ide of the dtawer so the edges are centercdin the open slob of the template.Set tte Stop ivex4 .d/ite the stap agaid the drav"erside and bck it in ph.e. Iherr, adjusthe drav,'pr fr@t asrcquited so it s also tbht againsthe W.set the lemphte. Herc the template is Nsilanedslightly back ( h6') frcin the face of the dtawer side. arabbeted set-uD bl&k makes this auick and accuate.Position Fenae. A{ter a liftle math calculatlon (perthe jig instrudions), set both ends of the fence usitg acombinatbn sorEre ta ensure the fence is paralleLB1w.Woodsnith.corn
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