Since I don't have an existing slider, I could either go with an all-in-one unit or an add on unit. The cheap add-on units from Neweer have mostly disappeared off eBay and Amazon. If anyone has one for sale, let me know, I could buy @aksels slider in the market place and add it on!

Ideally I am looking for something I can get in 2 weeks time, ca. 120cm long, quiet for sound recording, smooth (roller bearings are best?) can utilize a 2nd tripod for stability, and that works reasonably well for medium and close shots of an interviewee). At this budget level, I don't expect perfection, but, want to strive for it as always :-) .

Can one take noisy bearings apart and try to re-grease them, if loud?

Are there any DIY's you could recommend for this parallax add-on? Here's a complicated design DIY:

Design examples:

Neweer 120cm add-on: https://www.amazon.com/gp/product/B00NW9SBRU/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00NW9SBRU&linkCode=as2&tag=hyperlapsed-20&linkId=VCYBCGBQ4SLETTX5%3C/span%3E

Konova 120 cm add-on: https://www.amazon.com/gp/product/B00QLJULOE/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00QLJULOE&linkCode=as2&tag=hyperlapsed-20&linkId=YRFKPOJWA647PXVQ%3C/span%3E

All-in-one (looks like a Rhino "inspired" design): https://www.aliexpress.com/store/product/ASHANKS-A120A-120cm-Carbon-Fiber-Track-Slider-Adjustable-Angle-Tube-Follow-Focus-Pan-for-Stabilizer-DV/1970333_32670908629.html

Also available directly from CAME-TV. Just emailed them about availability. http://www.came-tv.com/cametv-camera-slider-carbon-fiber-120cm-lightweight-gp120q-p-732.html

-If no one can sell me a parallax add-on, this might be my only choice for a 120cm model, due to my time limitation.

Same design here: https://www.bhphotovideo.com/c/product/1210956-REG/came_tv_gp_120q_1_gp_120q_lightweight_carbon_fiber.html

Fixed designs. CON: Subject must be distance X away from camera to get optimal effect: https://www.bhphotovideo.com/c/product/1237083-REG/alzo_1639_smoothy_radius_and_linear.html https://www.bhphotovideo.com/c/product/1078663-REG/promediagear_vs32_pmg_duo_32_video_slider.html

Have I missed any others?

I am sure Kessler got all the rip-off designs off the market or these things didn't really work that well -and that's why there are so few around today…?

Your thoughts please!