Thunderpein Hand Forged 1095 Steel Cross Pein Blacksmith Hammer with Mjolnir Engraving & Ash Handle | Forge and Anvil Gift | RK-1536

This is the hammer a smith reaches for first. A cross pein head forged from 1095, with a broad flat face at one end, a long tapered pein at the other, heavy chamfers cut down every corner so nothing catches on the work, and a Mjolnir engraved into the cheek. The cross pein is the oldest surviving hammer pattern in European smithing and it was already old in the Viking Age. Hammers of essentially this shape came out of the Mastermyr chest, a Gotland tool find of the tenth or eleventh century that turned up in a bog in 1936 with a whole working smith kit inside it, and the pattern has barely changed since because there is nothing left to improve.

Forged, dressed, heat treated and engraved in our Memphis, Tennessee shop, hung on a straight ash handle turned and wedged here. It ships as a complete hammer. The stump it is standing on is a studio prop.

Specifications

Why the pein runs across the handle

Hold the hammer as you would to strike and look at the pein. It lies at ninety degrees to the handle, which means when you hit a bar lying along the anvil, the pein spreads that bar sideways, across its width, not along its length. That is the whole point. Drawing out with a flat face is slow, because the metal moves in every direction and half your effort goes into widening something you wanted to lengthen. Turn the hammer over, work the pein along the bar, and the metal moves fast in one direction. Then flip back to the flat face and planish the ridges out. Draw with the pein, finish with the face. Every taper, every point, every leaf and every scroll starts that way.

The chamfers matter more than they look. A hammer with sharp arrises at the cheeks will cut a line into hot steel every time you land at an angle, and those lines become cold shuts that split later. Chamfer the corners and a slightly off blow leaves a smooth mark you can planish out.

1095 at 54 to 58 HRC and why not harder

The head is 1095 taken to 54 to 58 HRC. That is the correct hardness window for a struck tool and it is deliberately below what you would use on a knife. A hammer face at 60 HRC or above can spall, throwing a chip of hardened steel across a shop at speed, and that is the single most common serious injury in amateur forging. In this window the face resists mushrooming under thousands of blows, and any damage that does occur shows itself as a slow flattening or a rolled edge that you can see coming and dress back with a file.

The eye and the cheeks are left softer than the striking surfaces, which is standard practice on a good forging hammer. A fully hardened head is a crack waiting for a reason, and the eye is where the stress concentrates when the handle flexes.

Engraving, runes and your own design

Use the rune converter on this page to turn a name, a date or a short phrase into Elder Futhark and we will cut it into the steel or the leather. If you would rather have a Viking pattern than a rune line, choose your own design in the engraving option above the add to cart button and tell us where it goes. Where a piece already carries an engraved design, your chosen engraving replaces it rather than sitting alongside it, which on this hammer means your rune line takes the place of the Mjolnir on the cheek. A name and the year somebody lit their first forge fits comfortably in that space.

Full detail is on the engraving page.

Bench and rack mounting

Keep it in a rack at the anvil, head down, with the pein pointing away from where your hand comes in. If it is going on a wall as a gift, hang it under the head from two pegs rather than through the eye, and keep it off an exterior wall where condensation collects. A shop hammer that lives outdoors will pit, so if it is going to sit for a season, oil the head and bag the whole thing loosely with a desiccant sachet rather than sealing it wet.

Care

Dress the face when it needs it. As soon as the edge of the face starts leaving crescent marks in hot steel, take a file to the crown and put the chamfer back. Do not let it get hot enough to change colour while you dress it, since that softens the layer you rely on. Wipe scale off the head after a session, and oil it before it goes away for any length of time. Rub the ash with boiled linseed once a year and check the wedge every few months. A loose head is not a job for later. Refit it or stop using it. There is more in our guide to steel care.

Forged in Memphis

This head is forged, punched, drifted, dressed, heat treated and engraved in our shop in Memphis, Tennessee, and the handle is fitted and wedged here. Nothing about it is drop shipped from an importer catalogue or bought in as a finished casting and stamped. It carries our lifetime warranty against defects in forging, grind, heat treat and fittings, with no end date and no receipt needed.

A note on handmade variation

This is hand made, not machine made or bulk produced, so what arrives will not be a pixel for pixel copy of the photograph. A drifted eye leaves its own signature, ash grain runs differently in every handle, and the length and radius of the pein shift slightly from head to head because it is drawn under a hammer rather than pressed in a die. Grain, tone, hammer texture and exact profile vary because each one is worked by hand from natural materials. The dimensions, the material and the build are the same every time. The character is not.

Frequently asked questions

Is this heavy enough for real forging?

Approximately two and a half pounds is a genuine general purpose forging weight. It will draw stock, planish, and set rivets all day. If you are moving heavy bar you would pair it with a sledge and a striker.

What is the difference between this and a ball pein?

A ball pein spreads metal in all directions from a small point and is the machinist and riveting tool. A cross pein drives metal along one axis and is the forging tool. Most smiths own both.

Can I rehandle it myself?

Yes. The eye is drifted to a standard oval, so a shop bought ash handle will fit with a little fitting. Wedge it properly and check it after the first hour of work.

Will the engraving wear off?

The Mjolnir is cut into the cheek, which is not a striking surface, so it stays. Engraving on a face would disappear with the first dressing, which is why it is not put there.

Is it a display piece or a tool?

A tool, heat treated and dressed for work. It is finished well enough to hang on a wall, but it is built to be used and it will look better for being used.

How long before it ships?

Processing is one to two weeks because each head is forged to order, then free shipping within the United States. Returns are accepted within seven days.

What is in the box

• 1095 steel cross pein forging hammer, dressed and heat treated
• Straight ash handle, fitted and wedged in the eye
• Mjolnir engraved on the cheek, or your rune line or design if selected
• Care card and lifetime warranty against defects
• Forged and finished in Memphis, Tennessee

Explore the range

See more in blacksmith tools, engraved and personalised pieces, splitting and felling axes and Viking axes, or read the guides.