0
extract
Wed 4th Dec 2013

Here's a quick preview of the holly leaf pattern paper download I'm currently working on. Excellent for your festive papercrafts.

Have your platonic solids templates at the ready!


Keep up to date: Receive the latest blog post by email

Rate this post:



In the crab model I'll be using a scotch yoke to pull the arm tendon. The scotch yoke mech-in-a-box moves up and down, the tendon pull is side to side. To change the pull angle by ninety degrees I'm using a bell crank.

This bell crank is made from two thirty degree sections glued back to back.


The bell crank fits onto the bottom of the arm socket where it is free to move up and down.


The arm fits in place in the arm socket and is held in place with glue. A long vertical tendon (white) is glued to the top edge of the bell crank. The arm tendon (red) is glued to the white tendon.


Pull the white tendon down, the motion is rotated by ninety degrees pulling the arm tendon sideways.


Keep up to date: Receive the latest blog post by email

Rate this post:



1
extract
Fri 29th Nov 2013

I put together a few gear profiles using my favourite web based gear designer and sent the files off to friend Skeptical Tony. This morning a slightly over-weight envelope clattered through the letter box containing these delightful gears! There are three sizes, ten, fifteen and twenty teeth all cut out using a laser cutter at the Ellesmere Port FabLab. One set is made from 3mm plywood, the second from 3mm acrylic sheet.


The ply shows the characteristic scorch marks of the laser cut but the perspex has a beautiful polished finish. Gotta get me one of those laser cutters!


It might be time to revive the original Late Bird project.

Thanks to Skeptical Tony and special thanks to M&D x


Keep up to date: Receive the latest blog post by email

Rate this post:



1
extract
Mon 25th Nov 2013

It's one of those problems that it is good to have. robives.com has been running slowly of late due to the increasing number of visitors. (Thanks and welcome to you all!) I've been on to my ever-helpful ISP justhost.com and they have helped me migrate the website onto a faster server with more bandwidth. From where I'm sitting it is looking snappier already!


Keep up to date: Receive the latest blog post by email

Rate this post:



0
extract
Mon 25th Nov 2013

After a few frustrating day struggling with dead hard drives and faulty motherboards I'm finally back to paper craft. Just remember folks, back up, early and often. I was glad I had!

I'm happy to return to the crab project. The good thing about being elbow deep in backups and restores is the time for reflection as the progress bargraph creeps slowly across the screen. I've thought of a couple of changes to try out. First of all, I've decided to fix one of the claws rather than having both moving. The tendon now pulls against the larger claw. The other change is to the tendon placement.


Currently the tendon runs through the centre of the arm. Here's the problem. Because the tendon is flat against the joint there is no leverage. Pull the tendon and the movement of the claw is sudden and jerky. I've solved this problem in earlier projects by lifting the tendon from the centre line using triangular section blocks at each joint. That said, I'm always on the look out for ways for simplifying mechanisms.


How's this? I've woven the tendon under/over/under along the upper side of the arm.This keeps the tendon high up away from the hinge line thus increasing the leverage at each joint.


The result, smooth, even movement as the tendon is pulled and the arm raised.


Keep up to date: Receive the latest blog post by email

Rate this post:




Add to Cart to download this kit for free !
Download Owl Box

The shape of the Owl Box is inspired by a papertoy batman I came across whilst exploring the many and varied pages of Pinterest. I can't find it again so I'm afraid I can't give credit where it is due. That said, lets get on and make this simple but delightfully cute owl!


I started out by printing out the Owl onto a sheet of thin card (230micron/ 67lb) then printing a page from the Polka-dot Pattern download on the reverse. The polka-dots gives the inside of the box a nice finished feel. I then set the paper aside to let the ink dry completely before following these few steps to construct the owl box.

Score along all the dotted and dashed lines then carefully cut out the parts.


Pre-crease all the dotted and dashed lines. Note that the dashed lines are hill folds and the dotted lines are valley folds.


Fold up and glue the open topped box base.


Glue the two feet to the base.


Fold round and glue together the head part into a square paper tube.

Fold in the top front and back to make the two "ears"


And that's it! The head acts as a box top. Fill your owl with candy and give it to a friend.


Tu-whit Tu-whoo!


Keep up to date: Receive the latest blog post by email

Rate this post:



1
extract
Thu 21st Nov 2013

I'm delighted to see more and more new members are joining from Europe. To help those members I'm happy to announce that I now accept membership payment in € Euros.

Annual standard membership is €11.95, membership plus is €35.95

You can find out more details about all the paper crafts and paper toys this membership gets you here

Click here to sign up!


Keep up to date: Receive the latest blog post by email

Rate this post:



0
extract
Thu 21st Nov 2013

Michael42er has created and entire herd of paper elephants using some of the patterned paper from this site. Check out the video below to see them in action. Nice work Michael!

Text


Keep up to date: Receive the latest blog post by email

Rate this post:



Paper ratchet mechanism. The paper craft project is available to download here.


Keep up to date: Receive the latest blog post by email

Rate this post:



Friend of the website and prolific mash-up maker Mr Cool has produced another of his delightful videos. 'An Endless Game of Cat and Mouse' features Ginger and the Mouse in, well, an endless game of cat and mouse. Nice!


Keep up to date: Receive the latest blog post by email

Rate this post: