These long tubes can also be purchased in bulk lots . They are easily trimmed to your required length with any sharp blade or razor. To build accurate molecular models, a suitable model scale must first be selected. Next, the bond lengths of the molecule must be determined. There are many ways to obtain these.
Experimental data is often available.
Another quick way to determine bond lengths is to add together the covalent radii of the two atoms that are connected. Higher order bonds, such as double and triple bonds, can also be modeled with the Orbit system. In fact, you have many bond style options, one of which is sure to meet your needs. The base atoms should have holes through their centers. Next, select appropriate bonding pegs to fit into the atom holes.