Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Saddle Square With Centreline Scribe Holes
A wrap-around saddle square that sits over a board's corner, so you can mark one continuous square line across the face and down the edge. It has a 60 mm face leg and a 40 mm edge leg, is 40 mm wide and 5 mm thick, and has a relieved inside corner so it seats over a rough or eased edge. The 2.4 mm scribe holes for an awl or a 2 mm lead holder do two jobs. Slide the square along the board with a point in a hole and it works as a line gauge at 10–50 mm in from the edge. The holes at 9.5 mm and 19 mm mark the centre of 3/4 in (19 mm) stock and 2x lumber (38 mm).
8–25 mm Hole Transfer Punch Sleeve Set
A snap-apart set of six flanged centring sleeves for 8, 10, 12, 16, 20 and 25 mm drilled holes. Each sleeve has a true-centre 3.4 mm bore for a 3 mm pin, an M3 screw or a 3 mm drill bit. Drop one into a hole in the first part, clamp it to the mating part and punch or pilot-drill through it, and the hole lands exactly on centre. The shank is 6 mm long so it sits flush in stock 6 mm or thicker. The shanks are 0.15 mm under nominal for a slip fit, and the flange is 6 mm wider than the hole, so each sleeve is easy to identify.
Five-Pattern Bolt Circle Marking Disc
This is a 128 mm layout disc for marking flange and wheel bolt circles without dividers or trig. It has five raised guide rings: 3 holes on a 40 mm circle, 4 on 60 mm, 5 on 80 mm, 6 on 100 mm and 8 on 117 mm. Every ring has one hole on the 0° line. All holes and the centre pivot are 3.4 mm, so a scribe, an awl, a 1/8 in punch or a 3 mm drill fits through each one. The 5 mm thick rings keep the tool upright as you mark. V-notches every 90° and ticks every 15° let you line the disc up with drawn centre lines.
150 mm Metric Rafter Speed Square
A 150 mm metric speed (rafter) square. The 12 mm lip hooks over a board edge so you can mark square cuts. It has engraved degree ticks every 5° swinging from the pivot corner, a mm scale every 10 mm, and 3 mm scribe holes 20–120 mm in from the fence for drawing parallel lines with a pencil or scribe. The open-frame triangle keeps it to about 43 cm³ and prints flat with no supports.
Sliding Trammel Beam Compass
A 170 mm print-in-place beam compass (trammel) for scribing large circles and arcs — speaker baffles, table tops, plywood cutouts — at radii from 27 to 129 mm (circles Ø54–258 mm). The carriage is printed captured on a dovetail rail and slides between the two end blocks; an M4 screw in a heat-set insert (5.5 mm bore) locks it to the beam, a Ø9.5 mm bore takes any pencil, scribe or fine marker held by an M3 set screw, and an M3 screw with a captured nut at the pivot end forms the adjustable centre point.
Round Stock Center Finder
A 90 mm V-jaw layout plate that drops over the end of any round bar, dowel or pipe from about 9 to 70 mm diameter; scribe through the long centre slot, rotate the stock 90° and scribe again — the crossing point is dead centre. The 8 mm deep V lips self-centre the tool so it can't rock off the end face.