One plane, two stamps, one giver still working
A hand plane stamped with two sets of initials, one worn and one crisp — handed over while both people are still working, which is the opposite of an inheritance.

A hand plane, side on, filling most of the chest. The wooden body has gone dark with age; the blade
stays bright. Stamped into the wood, one above the other: R M, worn soft at the edges, and below
it T M, cut clean and recent.
Two names, two hands, one tool. Both of them still use tools like it.
What do the two stamps on this plane actually record?
A tool changing hands while the person who owned it first was still using its equivalent.
The worn stamp is decades old — the initials of whoever bought the plane, set it up, and used it until the letters softened under repeated handling. The crisp stamp went in recently, by the person who received it. It's a different system from a workshop where every tool carries one name and stays there: that marks ownership once and settles it; this marks a handover and keeps both names legible, reading top to bottom as the object's whole history, cut into the wood itself rather than written on a tag that could be lost or swapped.
Why give away a working tool rather than wait?
Because a tool being used is worth more to the person receiving it than the same tool sitting untouched for years first.
A plane learns nothing sitting on a shelf. Handed over while the giver is still working — still capable of showing exactly how it should sound going through a piece of wood, still around to answer the question of why this one and not a newer one — the tool arrives with its knowledge attached. Wait until it can only be inherited, and all that's left to pass on is the object with none of the use.
Is this actually an inheritance, just early?
No — an inheritance is what's left after someone is gone. This is a tool given by a person who is alive, working, and still owns other tools exactly like it.
That distinction isn't a technicality. An inherited object arrives once, complete, with nobody left to ask about it. This one arrived with the giver still in the room, still able to demonstrate it, still likely to mention it the next time you're both in the same workshop. The word for handing something to someone who'll use it alongside you, rather than after you, is a gift — early, on purpose, and nothing more solemn than that.
Why stamp your own initials into someone else's mark rather than start a new one?
Because the point of stamping under the existing mark is continuity, not replacement — a new stamp started fresh would say something different, and quieter.
Adding a second line under the first keeps both names legible in the same object rather than erasing one for the other. It also commits the receiver to something specific: the plane is now expected to keep working, under a name that will, with enough use, eventually wear down to match the one above it. A stamp is a small thing to add. What it obligates you to is years of actually picking the tool up.
Does handing over a working tool early change how it gets used?
Often, yes — knowing a tool came from someone specific tends to raise how carefully it's kept, even though nothing about the tool itself has changed.
The blade still needs sharpening on the same schedule it always did, and the wood still needs the same care against damp. What changes is attention: a tool with a name in it gets checked, oiled and put away properly more reliably than one bought anonymous off a shelf, mostly because somebody you'll see again gave it to you rather than a shop. It's the same tool that ends up doing the actual repair you were handed the sealed part for, once there's a real job in front of it rather than a shelf to sit on.
Is there a rights question in printing someone's initials on a shirt?
Only if the initials are legible enough to identify a real, specific person to someone outside the household — which is worth asking about before printing, the same conversation any personal mark deserves.
Two letters stamped into a tool aren't a name, an address or a signature; drawn as shown, they read as a design detail rather than as identifying information. If the actual initials matter to you as they are, it's a short conversation to have with whoever they belong to, not a reason to invent different ones.
Does a stamped plane print well on a shirt?
Yes, if the wood stays a solid dark tone and the stamped letters are kept crisp rather than softened into the grain around them.
A wood body wants two or three flat tones at most rather than a photographic grain texture, which tends to muddy at fabric scale. The blade should stay one bright flat shape against the dark body for contrast, and both sets of initials need to survive at print size — small stamped text holds up better slightly bolder than the source photo shows it.
How do I get one made?
Describe the tool at JustOG — what it is, whose initials, how worn the older mark has gone. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.
Designs other people have published are in the shop.
Both sets of initials are still in use. Neither one is finished yet.