The idea can still be so good, the optical equipment still so high quality, if the shooting table for a hologram recording does not meet the stability requirements, then there is no chance of success.
My first recording table from the year 1980 consisted of a solid assembled box in the internal dimensions 2000 * 1000 * 500 mm (LBH). On the concrete or screed floor, I had positioned 4 large hollow blocks at each corner of the table construction, above each a carpet tile of appropriate size and the entire construction of an MDF chipboard of 2000 * 1000 mm size. On this chipboard 4 large old car tires were distributed as vibration damper. Again a layer of carpet tiles and then finally the wooden box, so that the total height was about 110 cm, to ensure a comfortable working height.
The bottom and insides of the wooden box were now carefully lined with a strong building foil. Subsequently, the box was filled with quartz sand to make the whole construction even more massive.
My first helium neon laser of 1 milliwatt power was sufficient for the small film format 6 * 5 cm.
Laser, mirrors and optics were largely vibration-free at appropriate
mounts are placed in the quartz sand according to the system. So the first hologram moved closer.
This design of this shooting table is an absolute „low-cost“ variant, which protects the wallet excellently and quite good and larger holograms with appropriate laser power allows.
The disadvantage of this construction is the actual incompatibility between precision optics and quartz sand. You have to be very clean and careful to work if you do not want to permanently damage the optics through the quartz sand.
My table today has only the dimensions with the construct of more than 30 years in common. It is no longer quartz sand, but more than 40 solid building blocks, embedded in a wooden construction of 2000 * 1000 * 200 mm (LHB) and covered by a 3 mm thick steel plate as actual work surface. This table stands on four tubulars connected by a tube, which can be filled with air and the table can raise or lower as desired. The entire system is caught by the base of an old massive bench, the contents of which are still filled with heavy tools. The weight of the whole table with substructure is about half a ton.
This table construction has only advantages:
It is absolutely sturdy and the steel working surface is great for working with magnetic components that promise far more stability than sand-based optics.
