How To Build A Travel Slider That Slides Twice Its Size
Jan 7, 2014
Udi Tirosh
Udi Tirosh is an entrepreneur, photography inventor, journalist, educator, and writer based in Israel. With over 25 years of experience in the photo-video industry, Udi has built and sold several photography-related brands. Udi has a double degree in mass media communications and computer science.
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A short while back we (as the rest of the world) were pretty amazed by the innovation from the folks over at Edelkrone with their Slider+, a 1 foot slider that can slide 2 feet.
Now videographer Doc Hutch shares his build for this slider. The secret sauce is actually combining two sliders and threading them with a wire that transfers movement from one slider to the other.
Doc uses linear sliders bought in a neighborhood store, but you can use any two identical sliders.
Here is Doc Hutch’s inspiration for you (film)makers: “This is follow up to my other DIY Edelkrone Style Slider video. I do not know the name or brand of the material and the hardware store I bought it from closed down. Take what you see and use your imagination and I am sure you will all figure out something that works“
the idea behind this slider is very similar to a design principle used by cargo lifters, known as block and tackle. Block and tackle is a system that exchanges movement for force. Here are a few examples from wikipedia, showing that in theory you could build a 3:1 slider (i.e. a 1 foot slider that extends to 3 feet)
Only in the slider above, there is not much force applied and the movement is simply doubled.
If you wanna make such a slider, here is the entire tutorial by Doc.
and the demo reel
[DIY Edelkrone Style Slider (Tutorial) via ISO 1200]
Udi Tirosh
Udi Tirosh is an entrepreneur, photography inventor, journalist, educator, and writer based in Israel. With over 25 years of experience in the photo-video industry, Udi has built and sold several photography-related brands. Udi has a double degree in mass media communications and computer science.
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12 responses to “How To Build A Travel Slider That Slides Twice Its Size”
Alright guys I have tracked down the company that sells these types of linear slides.
http://www.lm76.com/speed_rail_osg.htm
Use the OSG25 and remove the oil wipers or you will have a mess.
Let me know if you guys would like for me to take the slider apart and put it together step by step on another video. Leave a comment on my vimeo if you guys would be interested.
that would be pretty awesome, Doc! let me head over to the vimeo and say so there too :)
Do you know the price for them?
2 blocks + 2 15″ rails = $204
http://www.automation4less.com/store/products.asp?cat=1205
Yeah, I just spoke with the LM guys:
2 Blocks @ $66 each
2 20″ Rails @ $54 each
freight @ $8 (to Maine)
Total of $248.
A little more length… But… Ugh… I want to make one so bad. :-D
Also, it occurs to me that he may be messing with me in regards to length. 20″ is only 4mm longer than 500mm, which A4L sells for $45.
You can also get a ton of different styles of slider blocks and materials from Mcmaster.com
hi there…just a quick question…can you also use the slider for a slide of an angle of 45° upwards or downwards? (not straight slides)will it work?
Umm, using block and tackle principles, HOW could you build a one foot slider that extends three feet? The best you can do is have the head travel the length of the track while the track itself travels it’s own length (i.e. twice the distance). If you achieved more, it’d fall off the end because you’ve only got a total of 2 foot of track
To get more, you’d have to stack tracks, so a head travelling the length of a track, which is travelling its own length on a dolly which is ALSO travelling the length of another track below, etc. But that is NOT using anything more than the doubling block and tackle principal (twice).
yea, you are 100% correct, a 3:1 ratio slider would need three moving plates. it would be uber-cool wouldn’t it?
I’m thinking 10 sliders! Why stop when you’re ahead!
:)
What happened to the links on this? Looks like Doc Hutch’s vimeo account has vanished.