{"id":41259,"date":"2026-02-06T11:33:37","date_gmt":"2026-02-06T10:33:37","guid":{"rendered":"https:\/\/ribsonly.com\/2\/?p=41259"},"modified":"2026-04-07T16:51:24","modified_gmt":"2026-04-07T14:51:24","slug":"rtm-technique-resin-transfer-molding-explained","status":"publish","type":"post","link":"https:\/\/ribsonly.com\/2\/rtm-technique-resin-transfer-molding-explained\/","title":{"rendered":"RTM Technique: Resin Transfer Molding Explained"},"content":{"rendered":"\n
\"RTM
Northstar Vega 3.5<\/figcaption><\/figure>\n\n\n\n

Have You Heard of RTM?<\/h2>\n\n\n\n

You probably know hand lay-up, chop, and vacuum infusion techniques, but RTM? <\/p>\n\n\n\n

It stands for “Resin Transfer Molding”, and is a closed mold technique used to manufacture small to medium parts.<\/p>\n\n\n\n

Common in the automotive industry and less common in boat building. Some boat manufactures have adopted <\/strong>RTM production for small parts like lids and hatches.<\/p>\n\n\n\n

RTM gives you a finished underside of the part. Also extremely important is thickness control.<\/p>\n\n\n\n

Using an a and b mold, the cavity between the two molds can be closely controlled.<\/p>\n\n\n\n

This achieves repeatable, uniform, and predictable thicknesses.\u00a0The Resin Transfer Molding\u00a0<\/strong>has virtually no waste.<\/p>\n\n\n\n

Molds are reusable. Other than the hoses used for resin, there are no consumable materials.

NorthStar Vega Lite tenders are RTM- single shot production.<\/p>\n\n\n\n

A unique aspect of the process is the foam-filled cavity between the deck and hull. This adds rigidity and eliminates the need for stringers and secondary bonding.<\/p>\n\n\n\n

\n

100% composite construction with zero wood,\u00a0RTM\u00a0process achieves a high-quality, strong, and light durable boat with very consistent results.<\/strong><\/p>\n<\/blockquote>\n\n\n\n

This enables us to manufacture the hull and deck as a single piece. This method ensures a very high level of consistency. It eliminates an incredible amount of rework and waste.<\/p>\n\n\n\n

NorthStar is proud. It is one of the only known manufacturers to completely build one shot, one piece\u00a0RTM\u00a0<\/strong>hulls.<\/p>\n\n\n\n

\n\n\n
\n\t
<\/div>\t
\n\t\t
\n\t
\n\t\t\n\t\t\t\t\t<\/a>\n\t\t\t\n\t\t\t\"RTM\n\t<\/div>\n\n<\/div>
\n\t
\n\t\t\n\t\t\t\t\t<\/a>\n\t\t\t\n\t\t\t\"RTM\n\t<\/div>\n\n<\/div>
\n\t
\n\t\t\n\t\t\t\t\t<\/a>\n\t\t\t\n\t\t\t\"RTM\n\t<\/div>\n\n<\/div>\t<\/div>\n\t\n\t