Soldering Rails

はしごの作り方

Making Ladder

	I made a beam drilling jig from scrap styrene sheets. How to use the jig: Glue two beams temporarily. Put the beams through the groove of the jig. Drill a hole through drill-hole. Move the beams and put the index pin through the hole made above. Drill next hole. and so on. 桁の穴あけジグをスロール板のスクラップから作りました。二本の桁を仮に接着。ジグの溝に桁を通す。ドリル穴をとうして穴あけ。桁をずらして先にあけた穴を位置決めピンに通す。次の穴あけ。くりかえす。
	Lungs as this are made from 2X2mm square styrene rods. 横木は２Ｘ２ｍｍのスチロール角棒から作ります。
Use this side at first to remove the edges of the rungs. この面で棒の角をとる。 Next use this side next to make round parts of the rungs. 次にこの面で棒のはじを丸く削る。	I made a rung-end rounding jig from 2mm thick steel plate. A 2mm hole is drilled and one side of the hole that does not have burr is chamfered. Never remove the burr. The burr is important. As shown in second photo the burr works as a cutter to make the rung-end round. Put 2mm styrene bar to a chuck of an electric drill, and push the styrene bar through the hole of the jig. ２ｍｍ厚の鉄板に２ｍｍドリルで穴をあけ、バリが出てないほうを面取りしておきます。バリを取ってはいけません。バリがカッターとして働きます。２ｍｍの角棒をドリルチャックに取り付け、ドリルをまわしながら穴に押し付け削ります。
	This is the finished ladder. はしご完成。