For an adjustable objective lens ??? https://www.amazon.com/stepper-Stepper-degrees-Sliding-slipway/dp/B00SWDQUGK/ref=pd_sbs_328_3?_encoding=UTF8&pd_rd_i=B00SWDQUGK&pd_rd_r=NM015R0TRMPQJAZDE63D&pd_rd_w=vHvz8&pd_rd_wg=RSECs&psc=1&refRID=NM015R0TRMPQJAZDE6

Lasers
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For an adjustable objective lens ???

https://www.amazon.com/stepper-Stepper-degrees-Sliding-slipway/dp/B00SWDQUGK/ref=pd_sbs_328_3?_encoding=UTF8&pd_rd_i=B00SWDQUGK&pd_rd_r=NM015R0TRMPQJAZDE63D&pd_rd_w=vHvz8&pd_rd_wg=RSECs&psc=1&refRID=NM015R0TRMPQJAZDE63D

Been thinking about this. I may want to make this hack so that I can easily snap in different focal length lenses for cutting vs engraving.

I use a lift table to adjust for large pieces and eventually a rotary table will be built.

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Just rip one out of a CD-ROM/DVD drive and try it out. I bet you can find one for free somewhere :smiley: $20 bucks!

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Yes I have done as you suggest for other projects but found that getting the remounting of the slider right was a pain.
What I like about this one is that the leadscrew, base and slide are all there.
Your idea is certainly cheaper.

4

I tried one of thoose, doesnt have any (enough) holding torque at all, even powered.
So i went with a smaller Nema8 instead, work in progress.
I don´t have a movable table, so i´m making a autofocus.

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@HP_Persson I saw that slide you posted and had to have it :). Bought it and now its admiring me on my desk waiting for a project…