DMR Mikasu-Works sells its button-cell light sets by lamp count

The description links each set separately on the shop:

• the one-lamp set
• the two-lamp set
• the four-lamp set

Splitting a lighting product by lamp count rather than by car is a sensible way to sell to shell builders, because the number you need is dictated by the body, not by the chassis under it. A four-lamp set reads as a pair of headlights and a pair of tails, or as quad round headlights on a shell that wants them; a single lamp is a fog light, a reverse light, a light bar, an interior glow. What the description does not do is tell you which of those the maker had in mind, or what each set physically includes.

A 1/10 drift body is clear polycarbonate painted from the inside, which means every lighting decision is a masking decision made before the first coat. Light escapes where paint is absent, so a builder masks the headlight and tail apertures from the inside, lays a backing coat over the rest so the shell does not glow like a lantern, and only then runs the color. Get the mask edge wrong and the lamp bleeds into the bumper; get the backing coat thin and the whole quarter panel lights up.

The other route is mechanical: cut the lens area out, fit light buckets and seat the emitter in the bucket so the aperture, not the paint, defines the shape of the light. That is slower and it is the version that survives being looked at from a meter away, which is the only distance that matters when the car is on the far side of the layout and you are standing at the edge of it with a transmitter.

Either way, the thing a self-powered set changes is the install order. Wiring that terminates at a receiver has to be routed, strain-relieved and left long enough that the body can still come off the posts without tugging. A unit that carries its own cell is a mounting problem inside the shell and nothing else — though where the cell sits, and how you reach it to change it with the body on, becomes the question the builder has to answer.

DMR Mikasu-Works runs the shop the parts are sold through and also operates DMR WIN'S JAPAN, described in the video description as a large circuit for radio drift and more, at 439-1 Minami-Tamatsukuri, Tako-machi, Katori-gun, Chiba, open Saturdays, Sundays and holidays from 10:00 to 0:00. The description does not say what surface the layout runs, so take nothing about tires from this piece.

The lighting video is tagged as part of the channel's drift output rather than a build series, and the posted figures at the time of writing are 5,134 views, 59 likes and two comments. That is a maker selling a small part to the people who already watch the track it runs — a short supply chain, and an unusually direct one.

The video is on YouTube from DMR Mikasu-Works. The three sets are sold through the DMR online shop, and the track's own page is DMR WIN'S JAPAN.