5x5 cm Spine Rounding Tool with 4 Grooves (Rondzetblok / Rundeholz, 3D-Printed)

$77.26+

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  • Handmade
  • Materials: plastic, PLA

Spine rounding tools are used to round spines of covers when one is making case-bound books. Alternatively, they may be used to form a rounded spine of a book block.

In the first case, you place the spine of the cover in that groove and work it with something like a pestle until it is properly rounded. First, this allows making a perfectly round spine. Second, it protects from breaking or wrinkling the spine. You may start with a larger radius and steadily reach the needed radius with different groves to be even more careful.

While forming a book block, you have to put the sewn – but not yet glued book block – into the groove, gently form it, and carefully take it out for gluing. I have never tried to do that – I’ve always rounded my books by hand and in a press. But I know bookbinders who use that method.

Tool sizes:
- Width: 5 cm;
- Height: 5 cm;
- Length: 21 cm / 30 cm / 38 cm;
- Groove diameters: four grooves on four sides of any diameter from 10 mm to 40 mm, that will fit in the design (please leave a comment upon ordering);
- The default set of grooves for this tool is: 15 mm, 20 mm, 30 mm, and 40 mm.

You may also want to order a round sanding tool to accompany this rounding tool. They are used not only for sanding but also as a substitute for a pestle while rounding spines: https://www.etsy.com/shop/BonefolderClub?ref=l2-shopheader-name&search_query=Round+Sanding+Tool

Some of the benefits of the plastic tool compared to the wooden tool:
- The wood itself is much more expensive than plastic;
- Woodworking is a much more expensive process than 3d-printing;
- The weight of the wooden tool is higher. Hence, shipping is several-fold more expensive.
All that allows making plastic tools considerably cheaper.

By default, items are printed in any random color available at the moment. If you want to choose a specific color, please write us a message. Colors currently available are listed in our FAQ section: https://www.etsy.com/shop/BonefolderClub#more-section
If you want to get your jigs printed in some other color, that may be done for an additional 10 Euro fee (if the color is available at our supplier).

You can always add tracking to your order for an additional fee.
Free tracking is available:
- for orders from the EU above 60 euros
- for orders from other parts of the world above 100 euros.

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Other factors—such as shipping carrier delays or placing an order on weekend/holiday—may push the arrival of your item beyond this date.

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Feb 3-23

Jan 18

Order placed

After you place your order, iBookBindingStore will take 2-3 weeks to prepare it for shipment.

Feb 1-8

Order ships

iBookBindingStore puts your order in the mail.

Feb 3-23

Delivered!

Estimated to arrive at your doorstep Feb 3-23!

Cost to ship

Free

Returns & exchanges

Accepted

Exceptions may apply
Etsy offsets carbon emissions from shipping and packaging on this purchase.
Etsy offsets carbon emissions from shipping and packaging on this purchase.

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Ships from France
Stepan Chizhov

Stepan Chizhov

Owner of iBookBindingStore

Message Stepan

This seller usually responds within a few hours.

530 shop reviews

5 out of 5 stars
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Alex Appella May 4, 2018

5 out of 5 stars

Stepan was so great! These are exactly as described, and we can hardly wait to put them to use in our binding studio. There was a little delay with the int'l shipping (not his fault) and he was so attentive and helpful. Answered all emails quickly. So excited to get these!

Purchased item:

scrobbesbyrigcyr Sep 2, 2018

5 out of 5 stars

Stepan is a really helpful seller, great communications. This spine rounding tool does the job well and is an impressive piece of 3D printing. Reasonable prices and quick international shipping.

Purchased item:

kycstar Nov 9, 2021

5 out of 5 stars

Love this!!! I have been making small books and this has been a life saver. I love that it’s exactly 5mm between the holes as I picked and it came a MONTH sooner than I expected. The owner is really nice, and reached out right away. The best part, they do random color and it was my favorite color, green! Highly recommend!!

Purchased item:

Nate Dec 15, 2021

5 out of 5 stars

A poor craftsperson blames their tools, but the same can be said of those who don’t give credit to their toolmakers! Stepan was incredibly helpful, and made my form even faster than he predicted. Considering the scarcity of tools like this, and the difficult workarounds necessary if you don’t have one, I can’t recommend getting one of these enough. Amazing price and killer quality! Super solid.

Purchased item:

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