Tune connection grip and single-stud hold

This mode prepares a declared print derivative of a checked, plain rectangular Nexlock Brick System brick or plate. It retains the source body, roof and underside structures, replaces the top studs with round 4.80 mm gripping cylinders, adds a 0.10 mm tip lead-in, and insets exterior body planes 0.10 mm per side. The stud centers keep their 8 mm spacing.

Only the underside receiving contour offset varies between fit candidates. Negative values add a small amount of contact material for a tighter connection; positive values open it. The values are per receiving surface, not a new stud diameter. Global clearance, XY and shrink compensation stay at zero in this mode.

1. 1

   Use Find my fit and identify the connection problem and printed side. Tune connection grip keeps 4.80 mm studs fixed while changing the receiving surfaces of a supported plain brick or plate.

2. 2

   Review the proposed direction and candidate values. Use a balanced comparison when starting fresh, a tighter direction for loose receiving grip, or a looser direction when the printed underside needs too much force.

3. 3

   Print and cool the candidates with their matching process. Compare them against the same physical reference, rejecting force, scraping, cracks, rocking or a seating gap.

4. 4

   Choose the closest sample and start a finer comparison if needed. A new comparison needs new printed observations; earlier printed markers and measurements do not apply to the new geometry.

5. 5

   Repeat the selected winner three times and check both one-stud engagement and the intended complete connection before recording verification.

Historical single-stud range · tighter trials remains available under Comparison range when choosing Tune connection grip from All tests. Its fixed values, listed below, are all at or tighter than −0.020 mm. Use this range only when that is the intended experiment; choose a guided looser comparison for an overly tight receiver.

The −0.020 mm value is a historical receiving-surface reference, not a guaranteed fit for another printer, spool or mating brick. Saved sessions retain their original candidates and evidence.

Use a 1 × 1 reference or offset the two parts so exactly one stud is engaged. After at least 10 connect/release cycles on every copy, invert the connection for 10 seconds. The attached piece must hold its own weight, seat flat and release without damage.

This is a Nexlock functional acceptance check, not a standardized clutch-force measurement. Also inspect the whole intended connection and a small staggered wall for rocking, alignment and lift. An excellent multi-stud grip does not automatically mean one-stud retention is good.

All receiving-fit candidates share the same surface recipe. The trial uses nozzle-compatible fine layers, the selected motion source, seam wiping, delayed early cooling and no brim. Existing spool flow and machine pressure-advance tuning remain relevant.

Keep fit adjustments baked into the exported geometry. Do not add a second global XY or shrink correction in the slicer. A later process change can alter the printed grip even when the CAD dimensions remain identical.