Help

Yes, to order, but it is worth knowing what the result looks like: polypropylene melts under the laser heat instead of vaporising, so the edge comes out with burrs and can be slightly wavy. For parts where the edge will be visible, a CNC router gives a much better result. Tell us about the part and we will tell you how we would make it.

We never laser-cut POM (Delrin): when it burns it releases toxic formaldehyde. Polycarbonate is not a good candidate either, because it yellows and leaves a burnt edge. Both are materials for a CNC router, not a laser. If your part needs either of them, write to us and we will tell you whether we can help or who to contact.

Email us at hola@haztupieza.es with the dimensions, quantity and what the part is for. If you have the cutting file, attach it. We will reply the same working day with a firm price and lead time.

With a 0.4 mm nozzle, the practical minimum is 0.8 mm (two lines). Below that, the wall will be hollow or may not print at all. For load-bearing parts, do not go below 1.6 mm.

Up to around 45 degrees from vertical, the part can support itself. Beyond that it needs support, which leaves a mark on the surface. If you can, redesign the overhang as a 45-degree chamfer and you avoid both the support and the mark it leaves.

Leave 0.2 to 0.3 mm clearance per side for a sliding fit, and 0.1 to 0.15 mm for a press fit. If the part is large, leave a little more: material shrinkage adds up over length.

A printed part is anisotropic: the bond between layers is considerably weaker than the continuous material. Orient the part so the main load runs in the plane of the layers, not perpendicular to them. Tell us how it will be loaded and we can orient it for you.

Yes. Download the file —if there is a 3MF, use the 3MF: it comes with the parts separated and the colours already set— and upload it to the configurator. The only thing you need to check first is the model licence: most are non-commercial, which means you can order the part for yourself but not to sell it. We explain it all in our guide to downloaded models.

We repair meshes with basic errors at no extra cost. If the file has large holes or inverted geometry, we will tell you before manufacture. To export properly from your CAD software, use a fine tessellation tolerance and check that the model is in millimetres.

The AMS uses a single extruder: to change colour it has to retract the previous filament, load the new one and purge the mixed material until it runs clean. Each change uses around 1.6 g of filament that goes to waste and about 26 seconds of machine time. On a 200-layer part with two colours, that can mean hundreds of grams of waste and several extra hours.

Three options: reduce the number of colours, group colour changes at just a few heights (horizontal bands are better than a pattern spread throughout the whole part), or print in one colour and paint it afterwards. Our priming and painting service is usually cheaper than multicolour printing for tall parts.

Yes, it is one of its best uses. We load PVA (water-soluble) or HIPS (limonene-soluble) in one channel and the part material in another. The support dissolves away, leaving internal geometries that would be impossible to clean by hand with the same finish.

SVG or DXF, always at 1:1 scale and in millimetres. SVG is more convenient if you work in Illustrator, Inkscape or Figma; DXF if you use AutoCAD or a 3D CAD package.

We calculate the area from the largest outer contour and subtract the inner contours. If your design has open paths or overlapping duplicates, the calculation will be off. Join the paths and remove duplicates before exporting.

In SVG, lines are cut and black fills are engraved. Draw the outline of the part as a line with no fill and fill whatever you want engraved with solid black: it comes out in a single shade, frosted white on cast acrylic (PMMA) and toasted on MDF. Don't use greys or transparency, because they are engraved just like black. If a filled shape also needs to be cut out, give it a pure red outline (#FF0000). Extruded acrylic can't be engraved, and in DXF everything is cut.

Cast acrylic (PMMA) (PMMA GS) is made by polymerising between two sheets of glass and has a much higher molecular weight. It cuts with a clean, glossy edge, does not build up internal stress when machined and withstands solvents better. Extruded acrylic (PMMA) (PMMA XT) comes from an extruder, is cheaper and has tighter thickness tolerance, but tends to crack when drilled and gives a poorer laser-cut edge.

Because we laser-cut it and the result is completely different. Cast acrylic (PMMA) comes off the laser with a glossy edge and needs no finishing; extruded acrylic (PMMA) comes out matt and marked. The difference in material price is small compared with the finishing time it saves.

Yes. Acrylic (PMMA) can be bonded with acrylic adhesive (methylene chloride or two-part acrylic adhesive) for a virtually invisible joint, and heat-bent at between 150 and 170 degrees. We offer both services as finishing options in the configurator.

Use water with mild soap and a microfibre cloth, always damp. Never use alcohol, ammonia or standard glass cleaner: over time they can cause the material to crack. And never wipe it dry, because dust scratches it.

Yes. The highlighted price already includes 21% VAT and is exactly what you will pay. Many of our customers are businesses and self-employed professionals who reclaim VAT, so we always show the taxable amount excluding VAT alongside it. The only figures shown excluding VAT by their nature are the minimum order and the free-shipping threshold, and we state that clearly where they appear.

There is no minimum quantity: we make orders from a single part. There is a minimum manufacturing charge of €12.00 excluding VAT per order, because below that amount the job setup costs more than the part itself. If your order doesn't reach it, you can still place it: a surcharge for the difference is added, and you see it in the cart before paying.

By card (your bank may ask you to confirm the purchase), by PayPal or by bank transfer. For bank transfers, we give you the IBAN and payment reference when you finish the order, and also by email. We start manufacturing when the payment reaches our account, usually on the next working day. If the payment doesn't arrive within a few days, the order is cancelled automatically and you aren't charged anything.

Yes, with plazox, the instalment payment offered by Spain's major banks. Choose to pay by card and, on your bank's payment page, enter your credit card details and choose the number of instalments: 3, 6 or 12. It is for purchases over €60, with a credit card from a participating bank, and the conditions (fees and interest) are those of your contract with your bank. We receive the full payment and you don't have to fill in any forms.

No. Your card details are sent encrypted directly to the payment gateway: we only receive signed confirmation that the transaction has been authorised. We never see or store your card number.

Yes. Select Company at checkout and enter the legal company name and CIF. The invoice is issued in the company's name and emailed to you with the confirmation.

Quotes are saved for 14 days. Once that lead time has passed, they are recalculated using the current rates when you confirm the order, and if the amount has changed we show you before you pay.

From when the payment gateway confirms payment, not when you place the order. For bank transfers, it starts when the payment reaches our account.

As long as it is still marked Pending payment or Payment confirmed, yes: write to us with the order code. Once it goes into production, material and machine time are committed and we cannot cancel it.

If the defect is ours (dimension out of tolerance, layer separation, burnt cut), we will remake it at no cost or refund you —your choice. Send us photos within 14 days of delivery.

Yes, with no shipping charge. Tell us in the order notes and we will let you know when it is ready to collect.

They are stored encrypted in our storage, outside the public website, and only opened by the technician preparing your job. They cannot be accessed by URL, are not shared and are used only to manufacture your order.

Yes, no problem. Write to us before placing the order and we will sign your NDA or send you ours.

Twelve months from the last manufacture, so you can repeat an order without uploading anything again. If you would rather we delete them sooner, ask us and we will.