Saturday, 30 June 2012

Panel Joinery 10



This joint is formed by placing one part through the other and rotating it into place.
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Windows on Labels



My black labels arrived today so I was able to cut some new window frames. A quick power adjustment and I cut clean through the black leaving the backing untouched. I held the curvy labels flat using magnets on the honeycomb bed (see pics after the cut) (svg here)
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Friday, 29 June 2012

Panel Joinery 9


Replacing the hook with a bulge creates a reversible snap lock. The pieces should clip together and seperate again with a little bit of effort.
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Panel Joinery 8


If you want to prevent this type of joint coming apart again you can shield the snaps with material.
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Panel Joinery 7


This is a slotted edge joint with a built in snap lock. The snap lock can be released by placing a small screwdriver into the end and twisting the snaps apart again.
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Thursday, 28 June 2012

Panel Joinery 6


It is possible to put a bias on these joints, that way when the joint gets assembled with the wrong orientation it becomes obvious.
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Panel Joinery 5


Where these joints are symmetrical there are 2 different ways that the joint could be assembled. When putting this joint into a kit there is a chance that it could be put together incorrectly.
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Wednesday, 27 June 2012

Panel Joinery 4


The best compromise for a CNC milled joint is to cut down inside the joint, a small flat spot remains to line up with the opposite half and the divots are not visible once the joint is assembled. 
(A small detour via CNC mills for me but just wanting to stay accurate to the article)
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Panel Joinery 3


The way round the corner problem is to cut into the piece so that the bottoms of each notch can sit flush with each other, in this configuration though the divots are visible when the final piece is assembled.
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Panel Joinery 2


This join demonstrates the problem of CNC mills. The tool has a curve radius so it can't get right into the corners, so when you try to create that previous joint the two halves can't sit flush together.
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Tuesday, 26 June 2012

Model Windows


Following on from the previous attempt to cut a model window for DovedaleModels I wondered if it would be possible to make the window frames by cutting them out of sticky labels. The goal is to cut the sticky part but not the coating underneath. With a bit of tweaking it was actually surprisingly easy. This is probably the only good thing about a manual power dial, you can adjust the power, and therefore cut depth, while the item is still cutting. A simple scalpel blade under one edge and the whole window frame lifted clean out of the label.
Apologies for using a customs label but it was the only label I could find tonight big enough to cut this from.
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Panel Joinery


These upcoming joinery items are taken from an article on the net, 10 points for guessing where. I'll like to it later in the series when I've had time to modify all the images appropriately.
To start though it's the simplest form of join, equal size slots cut in both sides of the material and the width of the material. The two pieces slide together to form a snug joint.
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Rams Horns


A non laser item now. A friend asked me to make some rams horns for a costume she's making. They've been a long time in development but now that I've finally got some 'skin' on the wire frame it's taken it to a whole new level. Need to find more time to get the other half done though.

Nottinghack Big Wheel


On my most recent trip to Nottinghack I cut and installed a big wheel to go under their laser cutter. They had been making do with the original design with just the wavy edge (not a lot to grip onto), which was cut onto a sheet too small and had a flat spot and was loosely held in by normal nuts so kept slipping. Hopefully they'll appreciate this one when they realise how much easier it is to do it this way.
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Monday, 25 June 2012

Roller blind end stops


I shortened the drawstring on my roller blind but I couldn't get the two ends to fix together again (none of my glue or melting techniques seemed to work) so in the end I laser cut a solution, these end stops stop the draw sting from pulling all the way through and also indicate which direction the blind will go in when pulled (although that is more obvious as one end always much higher than the other)
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Sunday, 24 June 2012

Sand Wheel


Eli's grandparents gave him a sand pit for his birthday (yesterday). I had a bit of time in advance to put together a toy to go in it. This is a classic type sand wheel, sand gets poured into the funnel at the top, drops out the hole onto the wheel making it turn. I'm quite surprised to discover that this assembled correctly first time. It was drawn as a combination of 3D modelling and converted to flat plans using Inkscape. Add in a dose of common sense and it all fitted together nicely and it actually works with sand in it. (svg here)
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Simons Cat Stamp 2


I made the handle nice and chunky so that Eli could use them again afterwards and I speckled a print pattern over some sheets of A4 which I used to wrap the presents with,
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Simons Cat Stamp


Eli adores Simons Cat, he asks for us to show the video all the time. I blame Grandad for letting him watch it but I digress. As a last minute thought before Elis birthday, I realised I could make some custom wrapping paper for him. The man in the post office gave me one of his inkpads and I lasered some cat stamps later that evening.
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