Hamond Industries Ltd - the Slide Forming Specialists
Helping you ensure that your part print is complete
A clear drawing and clear specifications will help us do the best possible job when quoting.
- Look carefully at the drawing. Is all the text writing clear and legible? Transmission will not improve it and might make it worse. Try to get a more clear copy.
- If you will be sending the drawing by FAX, check that your FAX machine is set for high quality faxes. Most machines by default send documents at a medium quality setting, more suitable for typed documents than fine line drawings. It's slightly more expensive when the FAX is set for high quality, but cheaper than resending it.
- On the part drawing, there should be specifications for
- the type of material
- the grade of material (look for letter groups like SAE or AISI followed by a number)
- material temper
- material thickness
- any necessary heat treating or coating
- if the part is to be heat treated, to what hardness?
- if the part is to be coated, to what thickness?
- The drawing should make clear (usually in a note)
- the units of measure (inches, meters, mm, cm, etc)
- the default tolerances (for dimensions that don't give explicit tolerances). Tolerances usually look something like this .xx=±0.05. There are usually 2 or 3 plus an angular tolerance.
- Now you need some accurate usage quantities. Most stamping prices are very sensitive to quantity. Usually, the most important is annual quantity or EAU - estimated annual usage. That's because our material suppliers charge us a price highly dependent on quantity. The more accurate the annual usage number, the better quote you'll get. Some stampers will also want to know shipment or release quantity.