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CAD and 3D printing

First I tell you if it holds. Then I print it.

I design and print functional parts for people who need one, or a few dozen. When the part has to carry a load, I run finite element analysis on it before it goes to the machine, and I write down the figure it holds to.

Send the file STEP, STL, IGES, or a photo if the broken part is in your hand.

The proof

This bracket, before it existed

Three states of the same part. The mesh, the load, the bracket in your hand.

You can turn the model below. Drag to rotate it, move the pointer to move the light.

The finished bracket, in black PETG, photographed on the bench.
The same bracket discretised into finite elements: a web of triangles across the surface, green with an orange patch near the fixing hole.
Stress map from the solver on the bracket, with the numeric scale of values on the right.

Part. As it comes off the machine, in black PETG.

How I work

Three steps, and the second one is what changes things

I look at the file.

I open it and check it before I give you a price. Walls under the minimum, fillets that are missing, undercuts that turn into trouble on the machine: if they are there, I write them down for you. Often the part needs changing, and often it is fine as it is.

If it has to hold, I check it.

I build the mesh, apply the load you give me and look at where the stress concentrates. I send you the result with the number, not with an opinion.

I print.

FDM for parts that have to work, resin when you need fine surfaces and detail. I tell you which of the two before I start, and why.

Work done

These I have already made

I have no reviews to show you yet. I have the parts.

  • Threaded collar with cap, and a two-hole bracket.
    Threaded collar with cap, and a two-hole bracket.
  • L-bracket with lever and pin.
    L-bracket with lever and pin.
  • Threaded collars in black, with the thread printed.
    Threaded collars in black, with the thread printed.
  • Gears and a splined coupling.
    Gears and a splined coupling.
  • Electronics enclosure, with the board rails inside.
    Electronics enclosure, with the board rails inside.
  • The same enclosure closed, with the openings on the lid.
    The same enclosure closed, with the openings on the lid.
  • The motor mount, seen from the other side.
    The motor mount, seen from the other side.
  • Eight parts from the same job, in different materials.
    Eight parts from the same job, in different materials.

And it is not the only one I checked

Mesh and stress map of a second component. Same method, a different load.

Second component discretised into finite elements, a green triangle web across the surface. Stress map of the second component, mostly blue, with the numeric scale on the right.

The guarantee

If it gives, I remake it

When I write that a part holds at a given load, that line is a commitment. If it then gives under that load, I redesign it and reprint it at my expense.

Where the guarantee ends, written here and not at the bottom of the page.

It applies to parts I analysed myself and for which I put a working load in writing. It does not cover a use different from the one we agreed. It does not cover a file you asked me to print without a check: in that case I just print, and I tell you so first.

Grey printed mount holding a metal gearmotor, with lightening ribs at the base.
Printed mount, original gearmotor.

Spare parts

The part you cannot find any more

If the component is out of production and the supplier does not answer, we start from what you have. The broken part will do. Even a single photo with a caliper next to it will do.

I remodel it, and where the break says the original part was weak, I change the geometry instead of copying it.

Mechatronics

Also the parts that move

Black 3D printed pan and tilt turret, with a rack, two servos bolted on and the wiring coming out of the base.
Structure, mechanism, servos and wiring.

I do the electrical side too. I design the printed circuit board, write the microcontroller firmware, assemble and test.

The turret beside this text is one single piece of work: printed structure, rack, two servos, wiring. A shop that only does 3D printing hands you the shell and leaves you the rest.

Who looks at your file

Giacomo Pandolfo, portrait.

Giacomo Pandolfo. Electrotechnical surveyor, diploma with full marks at Istituto Omnicomprensivo Vallescrivia. I study Mechanical Engineering at the University of Genoa. I have worked freelance since 2024, on mechatronic prototypes.

  • I design in Fusion 360 and Solid Edge.
  • The workshop is in Isola del Cantone, in the province of Genoa.
  • At weekends I volunteer with Civil Protection and with forest fire fighting. It has nothing to do with the parts, but it says how I answer when something goes wrong.

I open the file myself. There is no automatic quoting engine behind this page.

Send the file

The part you are looking at will not check itself

The test already has a date. Send me what you have, even if it is in poor shape.

STEP, STL, IGES, JPG or PNG. Up to 25 MB. If it weighs more, write to me and I will send you a link.

Two lines are enough. If you know the load, write it. If you do not, we work it out together.

I answer you myself, not an automation. The file stays between you and me: I do not show it to anyone and it does not end up in any portfolio unless you tell me it can.

Received.

I open the file and answer you myself, not an automation. If nothing arrives, check your spam and then write to me at info@firmamentotechnologies.com.

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