Thanks to "Nirmata" for providing the following information.
source: SikhWiki
Sikligars Sikhs were the lohars (ironsmiths/blacksmiths) who once specialized in the craft of making and polishing weapons. Once more commonly known as Gaddilohars the term Sikligar was bestowed on these men who fashioned iron by Guru Gobind Singh who turned Lohgarh (the Iron fort at Anandpur Sahib) into the Sikh Armoury. The word is derived from the Persian - saqi/sakli, lit. polishing, furnishing, making bright (a sword), the term saqlgar means a polisher of swords. In medieval India, Sikligars were in great demand for manufacturing spears, swords, shields and arrows. What the world knows as Damascus steel, used in making some of the finest swords known to man, was manufactured by Indian lohars and shipped to Damacus as layered iron pellets.
Recently a piece of Gold embellished steel armour decorated with Sikh Bani (Hinted to be posibly once owned by Guru Gobind Singh) was made of this type of steel, which in India was called watered steel as its surface reminds one of flowing water. A lohar by the name of Ram Chand, initiated as a Sikh by Guru Gobind Singh, became Ram Singh the first Sikligar Sikh. Though not one of the Panj Piares he was with the Panj Piaras and Guru Gobind Singh fighting in the battle of Chamkaur and accompanied the Guru out of the fort in the night.
But now adays this is their condition:
The advent of modern weapons and industrial technology has hit the Sikligars hard economically. Engaged in the pursuit of an obsolete occupation, they are now a poor and backward people forming one of the scheduled castes as defined under the Indian Constitution.
Also known as gaddilohars they roam about in small groups carrying their `meagre possessions on specially designed carts (gaddi, in north Indian dialects) making and selling small articles such as knives, sickles, betelnut cutters, sieves, locks, buckets and toys which they often manufacture from wastemetal. The influence of Sikhism is still clearly discernible in the dress and social customs of some of the Sikligars. The males, especially those of the older generation, wear their hair long. Their womenfolk wear salvar (loose trousers) and kamiz (shirt) like Punjabi women or lahinga (skirt) and choli (bodice) like Rajasthani women, but the use of dhoti and san is rare.
On the annual Takht ishnan (lit. bath ceremony) at the Takht Sahib, it is the special privilege of Sikligar Sikhs to clean and oil the old weapons preserved there as sacred relics.