To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
THE HEATER IS A SOLDERING IRON
Usually wings models air combat and cord upholstered Mylar film. Stick it to the frame using BF-2, and the joints are heated with a soldering iron with a special nishikoi. In the Studio...
SHORT AGE OF SUPERPREVIEW
Civil war in USA was suddenly brought to the fore a small improvised cruisers who have achieved outstanding success. However, this does not mean that such ships are immediately received...