Where Does Powder Escape When Using a 24-Hole Capsule Filling Tray?
The gap between capsule body and tray hole
This is the most common escape point. When you separate a capsule and place the body into a hole, small clearance remains between the capsule wall and the hole edge. If the capsule body is not pushed fully down, or if the hole is slightly larger than the capsule size in use, powder can sift through that ring-shaped gap during spreading. With a multi-size tray such as the 24-hole model for sizes 000, 00, 0 and 1, the hole diameter must accommodate the largest size, so smaller capsules can sit with more visible clearance. Actionable check: after loading bodies, press each one down gently with a clean finger or the blunt end of a pen until it feels seated, then look across the tray at eye level. If a body sits proud of the surface, powder will collect around it and some will fall through. Limitation: pressing too hard can crack capsule bodies, so use light, even pressure. The tool in this step is the 24-Hole Capsule Filling Tray for Sizes 000, 00, 0 and 1.
The open capsule body during filling
The capsule body is a small open cup. When you pour or spread powder across the tray, powder can land on the rim of the body and spill over the side rather than into the opening. On a 24-hole tray this is visible as powder rings around each hole. The risk rises with fine, lightweight powders and with static, which makes powder cling to the tray and then drop in unwanted places. Actionable steps: spread powder in small increments rather than one large dump; use a flat card or spreader held at a low angle; and tap the tray gently on the bench after each pass so powder settles into the bodies instead of sitting on the rims. Limitation: static cannot be fully eliminated by technique alone, and very fine powders will always leave some surface dust. This builds on our earlier guide, How to Reduce Powder Waste When Filling Capsules.
The spreader or card edges and tray surface
Powder also escapes at the edges of whatever tool you use to distribute it. A card that overhangs the tray can push powder off the side. A card that is too small leaves powder mounded in the middle, and repeated passes push powder toward the tray edges where it falls onto the bench. On a 24-hole tray, which has a relatively small working area, this edge loss is proportionally more noticeable than on a larger tray because there is less surface to catch and reuse the powder. Actionable steps: use a card wide enough to span the tray's powder area, work in slow strokes, and keep a clean dry tray or sheet underneath to catch and reuse powder that falls. Limitation: reusing fallen powder is acceptable only if the surface underneath is clean and dry; otherwise discard it to avoid contamination. There is more on reducing powder waste in the same guide.
Capsule size and powder type change how much escapes
The 24-hole tray covers sizes 000, 00, 0 and 1, and the fit is not identical across those sizes. Larger capsules fill more of the hole, so there is less gap. Smaller capsules in the same hole can show more clearance and therefore more sifting loss. Powder type matters too: coarse, free-flowing powders tend to stay on top and can be brushed back, while fine, fluffy, or sticky powders sift through gaps and cling to surfaces. General guidance, not a product claim: expect more visible dust with fine powders and with smaller capsule sizes used in a multi-size tray. A practical decision criterion is to test one small batch, note where powder appears, and adjust seating and spreading technique before filling a full run.
