National Geographic Professional Rock Tumbler Kit- Stone Polisher for Kids and Adults, Complete Kit with Durable Tumbler, Rocks, Grit, and GemFoam Polisher, A Great STEM Hobby

Sturdy rock tumbler, comes with everything you need to get started. Only as far as stage 2 and I'm loving it. Can't wait to see the finished stones. Nice size barrel, holds a good amount. Thoroughly recommend.

Bought a cheaper version of this, and it broke a drive belt almost daily. Sent it back for a refund and bought this one. This is much better, and has been running for a couple of weeks now with no issues. It is also considerably quieter than the other one (although I still wouldn't want it in a room I spend a lot of time in). Feels good quality, it's been running well and it is really simple and easy to use. Very impressed.

Bought as a present the National Geographic Proffesional rock tumbler appeared to be the ideal gift and the rubber barrel appeared good value for money when compared with others. On opening the box it contains everything you would need to tumble, polish and shine the rocks, semi precious stones and crystals into beautiful objects. The process is made by NG's very easy to follow as 123 process and offers good results. Of the four tumbling processes we got to number 3 before we noted the rubber drive belt started to continually come off. On further investigation I could see a fine black dust where the tumbler was standing and identified the issue as poor quality large wheel that was very sharp and as such with every turn cut away at the drive belt until the side was flattened and would no longer stay in place and come off following a single turn. Not sure if this was the 🍋 in the basket but I could only see the spare replacement drive belt supplied may follow the same pattern of excelerated ware and decided to return the tumbler. As this product has increased in price since purchased I am now looking for a better quality replacement without all the extras. The NG Pro was a good all-rounder let down by some poor finish plastic component.

It works but god damn is it loud and annoying. You need to leave it spinning for literally weeks 24 hours a day. I thought this process would be 24x quicker than it is. Kids will not enjoy the wait and just be put off. Save your money and just buy some rocks already tumbled - it’s way cheaper.

Only lasted about three months when I got the dreaded 'E' error code - to be fair the seller let me return the item for a refund with no quibbles. Apparently these machines are known to be prone to this error/breakdown. I purchased a second one but it only lasted around two months, they are just not up to the job. This time I've not returned the item but instead looked online (YouTube) for advice from rock tumbling enthusiasts as to how to modify the machine in order to bypass the error. Even if this doesn't work it is worth keeping the machine just for the rubber barrel, which is very good. I've also managed to purchase a British made rock tumbler from a different online seller so hopefully will have better luck with that one.

This was a gift for my granddaughter. She is excited to see the finished gems in another week. My son said it was well made and they both are happy with the product.

Works well

The tumbler is fine - works and is quiet as far as tumblers go thanks to the rubber barrel The included rocks for tumbling are a let down though. A few decent sized pieces of cheap rose quartz, a piece of tigers eye. some dalmation jasper, some agate and a lot of fingernail sized tiles of red jasper which are unsuitable for tumbling. The supplies of grit are mean too. The biggest let down ( and the reason for the 3* rating) is that spare barrels are not available for the machine so if you want a dedicated barrel for the final polish then choose another brand which does supply them. This is a major downside if you want a good quality finish as any trace of a coarser grit left in the barrel will scratch the final finish and ruin all your hard work.

E davvero bello vedere i bambini quanta passione dedicano a questo attrezzo. La sua collocazione non può avvenire in casa in quanto un po' di rumore lo fa e andando di continuo anche per 7 GG di continuo non è il massimo. Lo consiglio a tutti i giovani esploratori che vogliono trasformare il grezzo in gioielli.

Wonderful little workhorse

Allt var bra

جهاز احترافي

Es muy práctico, de momento lo estoy usando en la primera fase con grano grueso y varias piedras necesitan más días, lleva como una semana en esta fase más o menos, y le he puesto más tiempo, el tambor es muy sencillo de abrir, como precaución uso guantes y mascarilla al sacar las piedras y lo hago en un lugar ventilado, hay muchas muestras lo que algunas son muy pequeñas y amatista, solo hay una y es pequeña, me hubiera gustado que llevara 2 o 3, el grano bien, aunque hay poca cantidad y solo me da para un uso, el tambor no hace mucho ruido, tuve que comprarle un adaptador al enchufe pues no venía incluido y no ponía nada en las instrucciones, antes de comprar el producto, pero lo compré en un bazar chino, en general el kit va bastante bien y da buenos resultados por ahora, pues me faltan las otras fases, bastante satisfecha.